Meta: Rename master to main

Author: fregante

.github/workflows/demo.yml

@@ -13,7 +13,7 @@ jobs:
       - run: npm run demo:build
       - run: npm run demo:test
       - uses: peaceiris/actions-gh-pages@v3
-        if: github.ref == 'refs/heads/master'
+        if: github.ref == 'refs/heads/main'
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./demo/dist

readme.md

@@ -5,7 +5,7 @@
 Battle-tested by and extracted from the [Refined GitHub](https://github.com/sindresorhus/refined-github) extension.
 
 - Try the live [demo](https://fregante.github.io/github-url-detection/)
-- See the code and expected URLs for [every detection](https://github.com/fregante/github-url-detection/blob/master/index.ts)
+- See the code and expected URLs for [every detection](https://github.com/fregante/github-url-detection/blob/main/index.ts)
 
 ## Install