Merge pull request #5264 from jsoref/warn-about-renaming-action-branches

Warn that renaming branches breaks actions

Author: janiceilene

content/github/administering-a-repository/renaming-a-branch.md

@@ -17,6 +17,8 @@ When you rename a branch on {% data variables.product.product_location %}, any U
 
 Although file URLs are automatically redirected, raw file URLs are not redirected. Also, {% data variables.product.prodname_dotcom %} does not perform any redirects if users perform a `git pull` for the previous branch name.
 
+{% data variables.product.prodname_actions %} workflows do not follow renames, so if your repository publishes an action, anyone using that action with `@{old-branch-name}` will break. You should consider adding a new branch with the original content plus an additional commit reporting that the banch name is deprecated and suggesting that users migrate to the new branch name.
+
 ### Renaming a branch
 
 {% data reusables.repositories.navigate-to-repo %}