changed note to remove domain example.

Author: johnmarco

articles/openshift/quickstart-portal.md

@@ -38,7 +38,7 @@ Register the `Microsoft.RedHatOpenShift` resource provider. For instructions on
     ![**Basics** tab on Azure portal](./media/Basics.png)
 
     > [!NOTE]
-    > The **Domain name** field is pre-populated with a random string. You can either specify a domain name (e.g., *example.com*) or a string/prefix (e.g., *abc*) that will be used as part of the auto-generated DNS name for OpenShift console and API servers. This prefix is also used as part of the name of the resource group (e.g., *aro-abc*) that is created to host the cluster VMs.
+    > The **Domain name** field is pre-populated with a random string. You can either specify a domain name (e.g., *example.com*) or a string/prefix (e.g., *abc*) that will be used as part of the auto-generated DNS name for OpenShift console and API servers. This prefix is also used as part of the name of the resource group that is created to host the cluster VMs if a resource group name is not specified.
 
 5. On the **Authentication** tab, complete the following sections.