Update content/github/collaborating-with-issues-and-pull-requests/creating-and-deleting-branches-within-your-repository.md

Co-authored-by: Felicity Chapman <felicitymay@github.com>

Author: Aakarsh-B

content/github/collaborating-with-issues-and-pull-requests/creating-and-deleting-branches-within-your-repository.md

@@ -25,7 +25,11 @@ versions:
 
 {% data reusables.pull_requests.automatically-delete-branches %}
 
-#### If the branch you want to delete is the repository's default branch, you must choose a new default branch before deleting the branch. For more information, see "[Changing the default branch](/github/administering-a-repository/changing-the-default-branch)."
+{% note %}
+
+**Note:** If the branch you want to delete is the repository's default branch, you must choose a new default branch before deleting the branch. For more information, see "[Changing the default branch](/github/administering-a-repository/changing-the-default-branch)."
+
+{% endnote %}
 
 If the branch you want to delete is associated with an open pull request, you must merge or close the pull request before deleting the branch. For more information, see "[Merging a pull request](/github/collaborating-with-issues-and-pull-requests/merging-a-pull-request)" or "[Closing a pull request](/github/collaborating-with-issues-and-pull-requests/closing-a-pull-request)."