Update doc of New-AzADGroup (#16570)

* Update doc of New-AzADGroup

* update

* Update

* remove culture

Author: dingmeng-xue

src/Resources/Resources/help/New-AzADGroup.md

@@ -27,7 +27,9 @@ New-AzADGroup -DisplayName <String> -MailNickname <String>
 ```
 
 ## DESCRIPTION
-Adds new entity to groups
+Adds new entity to groups. Please note user may need to specify `-GroupType` explicitly per tenant 
+configuration even though it is optional parameter. For details, see 
+[Group types](https://docs.microsoft.com/azure/active-directory/fundamentals/active-directory-groups-create-azure-portal?context=/azure/active-directory/enterprise-users/context/ugr-context#group-types)
 
 ## EXAMPLES