From master to main

Adapted to the default branch renaming from `master` to `main` [1] like
documented in detail in the main task issue
svengreb/styleguide-git#11 [2].

[1]: https://github.com/github/renaming
[2]: svengreb/styleguide-git#11

Subtask of svengreb/styleguide-git#11
GH-236

.codecov.yml

@@ -12,7 +12,7 @@
 # - https://docs.codecov.io/docs/node
 
 codecov:
-  branch: master
+  branch: main
 
 parsers:
   javascript:

.github/ISSUE_TEMPLATE.md

@@ -1,6 +1,6 @@
 <!-- Click on the "Preview" tab to render the instructions in a more readable format -->
 
-> **Please read the [contribution guidelines](https://github.com/arcticicestudio/nord-docs/blob/master/CONTRIBUTING.md) before filling out this issue template**.
+> **Please read the [contribution guidelines](https://github.com/arcticicestudio/nord-docs/blob/main/CONTRIBUTING.md) before filling out this issue template**.
 
 ## [Please follow one of the issue templates](https://github.com/arcticicestudio/nord-docs/issues/new/choose)
 

.github/ISSUE_TEMPLATE/bugs.md

@@ -5,7 +5,7 @@ about: Report a bug that is caused by the code in this repository
 
 <!-- Click on the "Preview" tab to render the instructions in a more readable format -->
 
-> **Please read the [contribution guidelines](https://github.com/arcticicestudio/nord-docs/blob/master/CONTRIBUTING.md) before filling out this issue template**.
+> **Please read the [contribution guidelines](https://github.com/arcticicestudio/nord-docs/blob/main/CONTRIBUTING.md) before filling out this issue template**.
 
 ## Prerequisites
 
@@ -15,7 +15,7 @@ Please do your best to provide as much information as possible and use a clear a
 
 - **Ensure the bug has not already been reported by using the [GitHub Issues search](https://github.com/arcticicestudio/nord-docs/issues)** — check if this enhancement has already been suggested. If it has **and the issue is still open**, add your additions as comment to the existing issue instead of opening a new one. If you find a closed issue that seems to be similar to this one, include a link to the original issue in the [metadata head](#metadata-head) section of this issue.
 - **Ensure your contribution belongs to the correct [main or port project repository](https://github.com/arcticicestudio?&tab=repositories&q=nord).**
-- **Ensure the bug is reproducible and has not already been fixed** — use the [latest version](https://github.com/arcticicestudio/nord-docs/releases/latest) and [`master`](https://github.com/arcticicestudio/nord-docs/tree/master) branch.
+- **Ensure the bug is reproducible and has not already been fixed** — use the [latest version](https://github.com/arcticicestudio/nord-docs/releases/latest) and [`main`](https://github.com/arcticicestudio/nord-docs/tree/main) branch.
 
 ## Metadata Head
 
@@ -43,7 +43,7 @@ What actually happens?
 
 ## Example
 
-Provide a [MCVE - The Minimal, Complete, and Verifiable Example](https://github.com/arcticicestudio/nord-docs/blob/master/CONTRIBUTING.md#mcve)
+Provide a [MCVE - The Minimal, Complete, and Verifiable Example](https://github.com/arcticicestudio/nord-docs/blob/main/CONTRIBUTING.md#mcve)
 
 **This is a optional section, but it can drastically increase the speed at which this issue can be processed since it takes away the time-consuming reconstruction to reproduce the bug.**
 The recommended way is to upload it as [Gist](https://gist.github.com) or new repository to GitHub, but of course you can [attach it to this issue](https://help.github.com/articles/file-attachments-on-issues-and-pull-requests), use any free file hosting service or paste the code in [Markdown code blocks](https://help.github.com/articles/basic-writing-and-formatting-syntax) into this issue.

.github/ISSUE_TEMPLATE/enhancement.md

@@ -5,7 +5,7 @@ about: Submit an enhancement suggestion for new features or minor improvements t
 
 <!-- Click on the "Preview" tab to render the instructions in a more readable format -->
 
-> **Please read the [contribution guidelines](https://github.com/arcticicestudio/nord-docs/blob/master/CONTRIBUTING.md) before filling out this issue template**.
+> **Please read the [contribution guidelines](https://github.com/arcticicestudio/nord-docs/blob/main/CONTRIBUTING.md) before filling out this issue template**.
 
 ## Prerequisites
 
@@ -15,7 +15,7 @@ Please do your best to provide as much information as possible and use a clear a
 
 - **Ensure the enhancement has not already been reported by using the [GitHub Issues search](https://github.com/arcticicestudio/nord-docs/issues)** — check if this enhancement has already been suggested. If it has **and the issue is still open**, add your additions as comment to the existing issue instead of opening a new one. If you find a closed issue that seems to be similar to this one, include a link to the original issue in the [metadata head](#metadata-head) section of this issue.
 - **Ensure your contribution belongs to the correct [main or port project repository](https://github.com/arcticicestudio?&tab=repositories&q=nord).**
-- **Check if the enhancement has already been implemented** — use the [latest version](https://github.com/arcticicestudio/nord-docs/releases/latest) and [`master`](https://github.com/arcticicestudio/nord-docs/tree/master) branch to ensure that the feature or improvement has not already been added.
+- **Check if the enhancement has already been implemented** — use the [latest version](https://github.com/arcticicestudio/nord-docs/releases/latest) and [`main`](https://github.com/arcticicestudio/nord-docs/tree/main) branch to ensure that the feature or improvement has not already been added.
 
 ## Metadata Head
 
@@ -41,7 +41,7 @@ If you've considered alternative features or solutions please describe it clearl
 
 ## Example
 
-Provide a [MCVE - The Minimal, Complete, and Verifiable Example](https://github.com/arcticicestudio/nord-docs/blob/master/CONTRIBUTING.md#mcve)
+Provide a [MCVE - The Minimal, Complete, and Verifiable Example](https://github.com/arcticicestudio/nord-docs/blob/main/CONTRIBUTING.md#mcve)
 
 **This is a optional section, but it can drastically increase the speed at which this issue can be processed since it takes away the time-consuming reconstruction to reproduce the enhancement.**
 The recommended way is to upload it as [Gist](https://gist.github.com) or new repository to GitHub, but of course you can [attach it to this issue](https://help.github.com/articles/file-attachments-on-issues-and-pull-requests), use any free file hosting service or paste the code in [Markdown code blocks](https://help.github.com/articles/basic-writing-and-formatting-syntax) into this issue.

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,6 +1,6 @@
 <!-- Click on the "Preview" tab to render the instructions in a more readable format -->
 
-> **Please read the [contribution guidelines](https://github.com/arcticicestudio/nord-docs/blob/master/CONTRIBUTING.md) before filling out this issue template**.
+> **Please read the [contribution guidelines](https://github.com/arcticicestudio/nord-docs/blob/main/CONTRIBUTING.md) before filling out this issue template**.
 
 ## Prerequisites
 
@@ -10,8 +10,8 @@ Please do your best to provide as much information as possible and use a clear a
 
 - **Ensure the pull request has not already been submitted by using the [GitHub Issue search](https://github.com/arcticicestudio/nord-docs/issues)** — check if this enhancement or bug fix has already been suggested. If it has **and the pull request is still open**, add your additions as comment or [suggest a change](https://help.github.com/articles/incorporating-feedback-in-your-pull-request/#applying-a-suggested-change) to the existing pull request instead of opening a new one. If you find a closed pull request that seems to be similar to this one, include a link to the original pull request in the [metadata head](#metadata-head) section of this new pull request.
 - **Ensure your contribution belongs to the correct [main or port project repository](https://github.com/arcticicestudio?&tab=repositories&q=nord).**
-- **Ensure to adhere to the [pull request contribution guidelines](https://github.com/arcticicestudio/nord-docs/blob/master/CONTRIBUTING.md#pull-requests)**, especially the one for tests and documentations.
-- **Check if the enhancement has already been implemented or bug already fixed** — use the [latest version](https://github.com/arcticicestudio/nord-docs/releases/latest) and [`master`](https://github.com/arcticicestudio/nord-docs/tree/master) branch to ensure that the enhancement or bug fix has not already been added.
+- **Ensure to adhere to the [pull request contribution guidelines](https://github.com/arcticicestudio/nord-docs/blob/main/CONTRIBUTING.md#pull-requests)**, especially the one for tests and documentations.
+- **Check if the enhancement has already been implemented or bug already fixed** — use the [latest version](https://github.com/arcticicestudio/nord-docs/releases/latest) and [`main`](https://github.com/arcticicestudio/nord-docs/tree/main) branch to ensure that the enhancement or bug fix has not already been added.
 
 ## Metadata Head
 

.svgo.yml

@@ -9,7 +9,7 @@
 #
 # References:
 # - https://github.com/svg/svgo
-# - https://github.com/svg/svgo/blob/master/.svgo.yml
+# - https://github.com/svg/svgo/blob/main/.svgo.yml
 
 multipass: true
 js2svg:

CHANGELOG.md

@@ -1,4 +1,4 @@
-<p align="center"><a href="https://www.nordtheme.com" target="_blank"><img src="https://raw.githubusercontent.com/arcticicestudio/nord-docs/master/assets/images/repository-hero.svg?sanitize=true"/></a></p>
+<p align="center"><a href="https://www.nordtheme.com" target="_blank"><img src="https://raw.githubusercontent.com/arcticicestudio/nord-docs/main/assets/images/repository-hero.svg?sanitize=true"/></a></p>
 
 <p align="center"><a href="https://github.com/arcticicestudio/nord-docs/releases/latest" target="_blank"><img src="https://img.shields.io/github/release/arcticicestudio/nord-docs.svg?style=flat-square&label=Release&logo=github&logoColor=eceff4&colorA=4c566a&colorB=88c0d0"/></a></p>
 
@@ -601,7 +601,7 @@ Gatsby and all official plugins have been updated to the latest versions. This c
 
 ![Release Date: 2019-03-16](https://img.shields.io/badge/Release_Date-2019--03--16-88c0d0.svg?style=flat-square&colorA=4c566a) [![Project Board](https://img.shields.io/badge/Project_Board-0.11.0-88c0d0.svg?style=flat-square&colorA=4c566a&logo=github&logoColor=eceff4)](https://github.com/arcticicestudio/nord-docs/projects/13) [![Milestone](https://img.shields.io/badge/Milestone-0.11.0-88c0d0.svg?style=flat-square&colorA=4c566a&logo=github&logoColor=eceff4)](https://github.com/arcticicestudio/nord-docs/milestone/11)
 
-<p align="center"><a href="https://www.nordtheme.com" target="_blank"><img src="https://raw.githubusercontent.com/arcticicestudio/nord-docs/master/assets/images/nord/repository-hero.svg?sanitize=true" width="60%" /></a></p>
+<p align="center"><a href="https://www.nordtheme.com" target="_blank"><img src="https://raw.githubusercontent.com/arcticicestudio/nord-docs/main/assets/images/nord/repository-hero.svg?sanitize=true" width="60%" /></a></p>
 
 <p align="center"><strong>Finally emerged from the snowstorm: Nord Docs initially launched!</strong></p>
 
@@ -638,7 +638,7 @@ Please see the [corresponding issue in the Nord repository][nord#112] to get an
 
 ![Release Date: 2019-03-10](https://img.shields.io/badge/Release_Date-2019--03--10-88c0d0.svg?style=flat-square&colorA=4c566a) [![Project Board](https://img.shields.io/badge/Project_Board-0.10.0-88c0d0.svg?style=flat-square&colorA=4c566a&logo=github&logoColor=eceff4)](https://github.com/arcticicestudio/nord-docs/projects/12) [![Milestone](https://img.shields.io/badge/Milestone-0.10.0-88c0d0.svg?style=flat-square&colorA=4c566a&logo=github&logoColor=eceff4)](https://github.com/arcticicestudio/nord-docs/milestone/10)
 
-<p align="center"><img src="https://raw.githubusercontent.com/arcticicestudio/nord-docs/master/src/assets/images/metadata-banner.svg?sanitize=true" width="60%"/></p>
+<p align="center"><img src="https://raw.githubusercontent.com/arcticicestudio/nord-docs/main/src/assets/images/metadata-banner.svg?sanitize=true" width="60%"/></p>
 
 <p align="center"><strong>Initial website launch ahead!</strong></p>
 
@@ -679,7 +679,7 @@ More details are provided by the [official MDX][mdx] and [gh-gatsby-mdx][] websi
 
 ### Image Processing
 
-To get the [best performance and quality for images][gatsby-docs-images] Gatsby's awesome support for the [high performance Node.js image processing library “Sharp“][gh-lovell/sharp] is used through [`gatsby-plugin-sharp`][gh-gatsby-p-sharp], [`gatsby-transformer-sharp`][gh-gatsby-t-sharp] and [gatsby-image][gh-gatsby-image].
+To get the [best performance and quality for images][gatsby-docs-images] Gatsby's awesome support for the [high performance Node.js image processing library “Sharp“][gh-lovell/sharp] is used through [`gatsby-plugin-sharp`][gh-gatsby-p-sharp], [`gatsby-transformer-sharp`][gh-gatsby-t-sharp] and [gatsby-image][gh-gatsby-plugin-image].
 
 To automatically process all images the transformer provides GraphQL query fragments like `GatsbyImageSharpFluid`. They are used within custom fragments that have been implemented to fit the project structure.
 
@@ -1764,7 +1764,7 @@ Note that packages marked with an double exclamation mark `‼` have been affect
 [dotenv]: https://github.com/motdotla/dotenv
 [editorconfig]: https://editorconfig.org
 [eslint-docs-auto-fix]: https://eslint.org/docs/user-guide/command-line-interface#fixing-problems
-[eslint-p-import/no-extraneous-dependencies]: https://github.com/benmosher/eslint-plugin-import/blob/master/docs/rules/no-extraneous-dependencies.md
+[eslint-p-import/no-extraneous-dependencies]: https://github.com/benmosher/eslint-plugin-import/blob/main/docs/rules/no-extraneous-dependencies.md
 [eslint-p-react/jsx-no-bind]: https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-no-bind.md
 [eslint]: https://eslint.org
 [eva-icons]: https://akveo.github.io/eva-icons
@@ -1841,7 +1841,7 @@ Note that packages marked with an double exclamation mark `‼` have been affect
 [gh-community-profile]: https://github.com/arcticicestudio/nord-docs/community
 [gh-date-fns]: https://github.com/date-fns/date-fns
 [gh-eslint-config-arcticicestudio]: https://github.com/arcticicestudio/eslint-config-arcticicestudio
-[gh-gatsby-image]: https://github.com/gatsbyjs/gatsby/tree/master/packages/gatsby-image
+[gh-gatsby-plugin-image]: https://github.com/gatsbyjs/gatsby/tree/master/packages/gatsby-plugin-image
 [gh-gatsby-mdx]: https://github.com/ChristopherBiscardi/gatsby-mdx
 [gh-gatsby-p-lodash]: https://github.com/gatsbyjs/gatsby/tree/master/packages/gatsby-plugin-lodash
 [gh-gatsby-p-sharp]: https://github.com/gatsbyjs/gatsby/tree/master/packages/gatsby-plugin-sharp
@@ -2011,7 +2011,7 @@ Note that packages marked with an double exclamation mark `‼` have been affect
 
 [gh-55-diff-r49]: https://github.com/arcticicestudio/nord-docs/pull/55/files#diff-90a2aa45c339ce4720a7fbbd23c65e3eR49
 [gh-jsc-matcher]: https://github.com/styled-components/jest-styled-components#tohavestylerule
-[gh-svgr-wpl]: https://github.com/smooth-code/svgr/tree/master/packages/webpack
+[gh-svgr-wpl]: https://github.com/smooth-code/svgr/tree/main/packages/webpack
 [npm-gp-svgr]: https://www.npmjs.com/package/gatsby-plugin-svgr
 
 <!-- v0.4.0 -->
@@ -2020,7 +2020,7 @@ Note that packages marked with an double exclamation mark `‼` have been affect
 [gh-gatsby-p-gtag]: https://github.com/gatsbyjs/gatsby/tree/master/packages/gatsby-plugin-google-gtag
 [gh-gatsby-p-manifest]: https://github.com/gatsbyjs/gatsby/tree/master/packages/gatsby-plugin-manifest
 [gh-gatsby-p-offline]: https://github.com/gatsbyjs/gatsby/tree/master/packages/gatsby-plugin-offline
-[gh-gatsby-p-robots-txt]: https://github.com/gatsbyjs/gatsby/tree/master/packages/gatsby-plugin-robots-txt
+[gh-gatsby-p-robots-txt]: https://github.com/mdreizin/gatsby-plugin-robots-txt
 [gh-gatsby-p-sitemap]: https://github.com/gatsbyjs/gatsby/tree/master/packages/gatsby-plugin-sitemap
 [gsup-ga-anonip]: https://support.google.com/analytics/answer/2763052
 [npm-gatsby-plugin-manifest]: https://www.npmjs.com/package/gatsby-plugin-manifest

CODE_OF_CONDUCT.md

@@ -56,6 +56,6 @@ Thanks for the inspirations and attributions to GitHub's [Open Source Guides][os
 
 [contrib-cov-1.4]: https://contributor-covenant.org/version/1/4/code-of-conduct
 [hoodie-coc]: http://hood.ie/code-of-conduct
-[mailmap]: https://github.com/arcticicestudio/nord-docs/blob/master/.mailmap
+[mailmap]: https://github.com/arcticicestudio/nord-docs/blob/main/.mailmap
 [oss-guides]: https://opensource.guide
 [ref-gender-neutral-docs]: https://modelviewculture.com/pieces/gendered-language-feature-or-bug-in-software-documentation