Add mention of noreply email addresses to warning

Author: yamiacat

content/account-and-profile/setting-up-and-managing-your-github-user-account/managing-user-account-settings/merging-multiple-user-accounts.md

@@ -30,7 +30,9 @@ shortTitle: Merge multiple user accounts
 
 {% warning %}
 
-**Warning:** Organization and repository access permissions aren't transferable between accounts. If the account you want to delete has an existing access permission, an organization owner or repository administrator will need to invite the account that you want to keep.
+**Warning:** 
+- Organization and repository access permissions aren't transferable between accounts. If the account you want to delete has an existing access permission, an organization owner or repository administrator will need to invite the account that you want to keep.
+- Any commits authored with a GitHub-provided `noreply` email address cannot be transferred from one account to another. If the account you want to delete used the **Keep my email address private** option, its commits will not be able to be claimed by the account that you want to keep.
 
 {% endwarning %}