haskellfoundation#23 Make a site deployment per branch

Author: visortelle

.github/workflows/build-and-deploy.sh

@@ -25,7 +25,7 @@ git checkout gh-pages
 git pull origin gh-pages
 
 site_src="${git_repo_root}/_site"
-gh_pages_root="${git_repo_root}/gh-pages-root"
+gh_pages_root="${git_repo_root}/docs"
 
 if [ "$git_branch" == "$main_git_branch" ]; then
   site_dest="${gh_pages_root}"