updated Billing manager access text (#52087)

Co-authored-by: Siara <[email protected]>

content/admin/managing-accounts-and-repositories/managing-users-in-your-enterprise/roles-in-an-enterprise.md

@@ -83,7 +83,7 @@ Billing managers only have access to your enterprise's billing settings. They ca
 * View a list of billing managers
 * Add or remove other billing managers
 
-Billing managers do not have access to organization settings or content by default.
+Billing managers do not have access to organization settings or content by default except for internal repositories within an enterprise in which they are a member.
 
 {% endif %}