Update catalog-managed-vnet.md

Author: zeinab-mk

articles/purview/catalog-managed-vnet.md

@@ -7,6 +7,7 @@ ms.service: purview
 ms.subservice: purview-data-catalog
 ms.topic: how-to
 ms.date: 12/12/2021
+ms.custom: references_regions
 # Customer intent: As a Purview admin, I want to set up Managed Virtual Network and managed private endpoints for my Purview account.
 ---
 
@@ -301,4 +302,4 @@ To set up a scan using Account Key or SQL Authentication follow these steps:
 
 ## Next steps
 
-- [Manage data sources in Azure Purview](manage-data-sources.md)
+- [Manage data sources in Azure Purview](manage-data-sources.md)