Clarify username change permissions for LDAP and SSO (#57582)

Author: thomasjohncole

content/account-and-profile/how-tos/setting-up-and-managing-your-personal-account-on-github/managing-your-personal-account/changing-your-username.md

@@ -9,7 +9,7 @@ topics:
   - Accounts
   - Usernames
 shortTitle: Change username
-permissions: '{% ifversion ghec %}Users with personal accounts can change their username. Members of an {% data variables.enterprise.prodname_emu_enterprise %} cannot change their username.{% elsif ghes %}If your instance uses built-in authentication, you can change your username. If you sign in to {% data variables.location.product_location %} with LDAP credentials or single sign-on (SSO), only your local administrator can change your username.{% else %}Users with personal accounts can change their username.{% endif %}'
+permissions: '{% ifversion ghec %}Users with personal accounts can change their username. Members of an {% data variables.enterprise.prodname_emu_enterprise %} cannot change their username.{% elsif ghes %}If your instance uses built-in authentication or LDAP, you can change your username. If you sign in to {% data variables.location.product_location %} with single sign-on (SSO), only your local administrator can change your username.{% else %}Users with personal accounts can change their username.{% endif %}'
 ---
 
 ## Prerequisites