Correct .com to .us on MAG-specific documentation

Correct .com to .us on MAG-specific documentation and examples

Author: PaulHCode

articles/azure-government/documentation-government-aad-auth-qs.md

@@ -55,7 +55,7 @@ The only variation when setting up Azure AD Authorization on the Azure Governmen
 
     ```cs
     //ClientId: Azure AD->  App registrations -> Application ID
-    //Domain: <tenantname>.onmicrosoft.com
+    //Domain: <tenantname>.onmicrosoft.us
     //TenantId: Azure AD -> Properties -> Directory ID
 
     "Authentication": {
@@ -71,7 +71,7 @@ The only variation when setting up Azure AD Authorization on the Azure Governmen
     ```
 4. Fill out the `ClientId` property with the Client ID for your app from the Azure Government portal. You can find the Client ID by navigating to Azure AD -> App Registrations -> Your Application -> Application ID. 
 5. Fill out the `TenantId` property with the Tenant ID for your app from the Azure Government portal. You can find the Tenant ID by navigating to Azure AD -> Properties -> Directory ID. 
-6. Fill out the `Domain` property with `<tenantname>.onmicrosoft.com`.
+6. Fill out the `Domain` property with `<tenantname>.onmicrosoft.us`.
 7. Open the `startup.cs` file.
 8. In your `ConfigureServices` method, add the following code: