More master --> main work

.github/workflows/bookdown.yaml

@@ -49,7 +49,7 @@ jobs:
         uses: nwtgck/[email protected]
         with:
           publish-dir: './_book'
-          production-branch: master
+          production-branch: main
           github-token: ${{ secrets.GITHUB_TOKEN }}
           deploy-message:
             'Deploy from GHA: ${{ github.event.pull_request.title || github.event.head_commit.message }} (${{ github.sha }})'

_output.yml

@@ -21,4 +21,4 @@ bookdown::gitbook:
         <li><a href="./">Happy Git and GitHub for the useR</a></li>
       after: |
         <li><a href="https://github.com/rstudio/bookdown" target="blank">Published with bookdown</a></li>
-    edit: https://github.com/jennybc/happy-git-with-r/edit/master/%s
+    edit: https://github.com/jennybc/happy-git-with-r/edit/main/%s