[Doc] Update description of group_id in

NCC now supports connections to any Azure service that supports private link.  So update
docs to point to corresponding documentation.

docs/resources/mws_ncc_private_endpoint_rule.md

@@ -35,7 +35,7 @@ The following arguments are available:
 
 * `network_connectivity_config_id` - Canonical unique identifier of Network Connectivity Config in Databricks Account. Change forces creation of a new resource.
 * `resource_id` - The Azure resource ID of the target resource. Change forces creation of a new resource.
-* `group_id` - The sub-resource type (group ID) of the target resource. Must be one of `blob`, `dfs`, `sqlServer` or `mysqlServer`. Note that to connect to workspace root storage (root DBFS), you need two endpoints, one for blob and one for dfs. Change forces creation of a new resource.
+* `group_id` - The sub-resource type (group ID) of the target resource. Must be one of supported resource types (i.e., `blob`, `dfs`, `sqlServer` , etc. Consult the [Azure documentation](https://learn.microsoft.com/en-us/azure/private-link/private-endpoint-overview#private-link-resource) for full list of supported resources). Note that to connect to workspace root storage (root DBFS), you need two endpoints, one for `blob` and one for `dfs`. Change forces creation of a new resource.
 
 ## Attribute Reference