docs: link corrections (#2874)

Fix a couple of master --> main branches in links

.github/pull_request_template.md

@@ -7,12 +7,12 @@ Resolves #ISSUE_NUMBER
 ### Before the change?
 <!-- Please describe the current behavior that you are modifying. -->
 
-* 
+*
 
 ### After the change?
 <!-- Please describe the behavior or changes that are being added by this PR. -->
 
-* 
+*
 
 ### Pull request checklist
 - [ ] Tests for the changes have been added (for bug fixes / features)
@@ -21,10 +21,9 @@ Resolves #ISSUE_NUMBER
 ### Does this introduce a breaking change?
 <!-- If this introduces a breaking change make sure to note it here any what the impact might be -->
 
-Please see our docs on [breaking changes](https://github.com/octokit/.github/blob/master/community/breaking_changes.md) to help!
+Please see our docs on [breaking changes](https://github.com/octokit/.github/blob/main/community/breaking_changes.md) to help!
 
 - [ ] Yes
 - [ ] No
 
 ----
-

CONTRIBUTING.md

@@ -183,5 +183,5 @@ Some things that will increase the chance that your pull request is accepted:
 
 # Additional Resources
 
-* [Octokit Codebase Overview](https://github.com/octokit/octokit.net/blob/master/OVERVIEW.md)
+* [Octokit Codebase Overview](https://github.com/octokit/octokit.net/blob/main/OVERVIEW.md)
 * [General GitHub documentation](http://help.github.com/)

SECURITY.md

@@ -4,9 +4,9 @@ Thanks for helping make GitHub Open Source Software safe for everyone.
 
 GitHub takes the security of our software products and services seriously, including all of the open source code repositories managed through our GitHub organizations, such as [Octokit](https://github.com/octokit).
 
-Even though [open source repositories are outside of the scope of our bug bounty program](https://bounty.github.com/index.html#scope) and therefore not eligible for bounty rewards, we want to make sure that your finding gets passed along to the maintainers of this project for remediation. 
+Even though [open source repositories are outside of the scope of our bug bounty program](https://bounty.github.com/index.html#scope) and therefore not eligible for bounty rewards, we want to make sure that your finding gets passed along to the maintainers of this project for remediation.
 
 
 ## Reporting a Vulnerability
 
-Since this source is part of [Octokit](https://github.com/octokit) (a GitHub organization) we ask that you follow the guidelines [here](https://github.com/github/.github/blob/master/SECURITY.md#reporting-security-issues) to report anything that you might've found.
+Since this source is part of [Octokit](https://github.com/octokit) (a GitHub organization) we ask that you follow the guidelines [here](https://github.com/github/.github/blob/main/SECURITY.md#reporting-security-issues) to report anything that you might've found.