fix

Author: wilcobmsft

articles/active-directory/users-groups-roles/directory-assign-admin-roles.md

@@ -640,7 +640,7 @@ Can perform common billing related tasks like updating payment information.
 | microsoft.directory/organization/basic/update | Update basic properties on organization in Azure Active Directory. |
 | microsoft.azure.serviceHealth/allEntities/allTasks | Read and configure Azure Service Health. |
 | microsoft.azure.supportTickets/allEntities/allTasks | Create and manage Azure support tickets. |
-| microsoft.billing/allEntities/allTasks | Manage all aspects of billing. |
+| microsoft.commerce.billing/allEntities/allTasks | Manage all aspects of billing. |
 | microsoft.office365.webPortal/allEntities/basic/read | Read basic properties on all resources in microsoft.office365.webPortal. |
 | microsoft.office365.serviceHealth/allEntities/allTasks | Read and configure Office 365 Service Health. |
 | microsoft.office365.supportTickets/allEntities/allTasks | Create and manage Office 365 support tickets. |