If your site is hosted in a GitHub Pages repository, prefer the following:
If your site uses only the gh-pages branch, set the gh-pages branch to your default branch and delete the master branch. This will ensure that when users visit your site’s repository, they see your site’s content, and that you don’t accidentally commit to the master branch, allowing the two to get out of sync. It will also set the default target for pull requests, ensuring contributors can’t do the same.