chore: update CI w/ master -> main branch change

.github/workflows/elixir.yml

@@ -2,13 +2,13 @@ name: Ash CI
 
 on:
   push:
-    branches: [master]
+    branches: [main]
     tags-ignore: ["v*"]
   pull_request:
-    branches: [master]
+    branches: [main]
   create:
     tags: ["v*"]
-    branches: master
+    branches: main
 jobs:
   build:
     runs-on: ubuntu-latest
@@ -114,7 +114,7 @@ jobs:
             #myelixirstatus
 
             See the changelog for more info:
-            https://github.com/ash-project/ash/blob/master/CHANGELOG.md
+            https://github.com/ash-project/ash/blob/main/CHANGELOG.md
           consumer-key: ${{ secrets.TWITTER_CONSUMER_API_KEY }}
           consumer-secret: ${{ secrets.TWITTER_CONSUMER_API_SECRET }}
           access-token: ${{ secrets.TWITTER_ACCESS_TOKEN }}
@@ -149,7 +149,7 @@ jobs:
         with:
           repository: ash-project/${{matrix.project}}
           path: ${{matrix.project}}
-          ref: master
+          ref: main
       - uses: actions/setup-elixir@v1.5
         with:
           experimental-otp: true

README.md

@@ -1,7 +1,7 @@
 ![Logo](https://github.com/ash-project/ash/blob/master/logos/cropped-for-header.png?raw=true)
 ![Elixir CI](https://github.com/ash-project/ash/workflows/Ash%20CI/badge.svg)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
-[![Coverage Status](https://coveralls.io/repos/github/ash-project/ash/badge.svg?branch=master)](https://coveralls.io/github/ash-project/ash?branch=master)
+[![Coverage Status](https://coveralls.io/repos/github/ash-project/ash/badge.svg?branch=main)](https://coveralls.io/github/ash-project/ash?branch=main)
 [![Hex version badge](https://img.shields.io/hexpm/v/ash.svg)](https://hex.pm/packages/ash)
 
 ## Documentation