Update how-to-enable-studio-virtual-network.md

Adding note on blob and file PE needed for storage.

Author: meerakurup

articles/machine-learning/how-to-enable-studio-virtual-network.md

@@ -109,7 +109,7 @@ Use the following steps to enable access to data stored in Azure Blob and File s
 
     For more information, see the [Blob Data Reader](../role-based-access-control/built-in-roles.md#storage-blob-data-reader) built-in role.
 
-1. __Grant the workspace managed identity the 'Reader' role for storage private endpoints__. If your storage service uses a __private endpoint__, grant the workspace's managed identity __Reader__ access to the private endpoint. The workspace's managed identity in Azure AD has the same name as your Azure Machine Learning workspace.
+1. __Grant the workspace managed identity the 'Reader' role for storage private endpoints__. If your storage service uses a __private endpoint__, grant the workspace's managed identity __Reader__ access to the private endpoint. The workspace's managed identity in Azure AD has the same name as your Azure Machine Learning workspace. A private endpoint is necessary for both __blob and file__ storage types. 
 
     > [!TIP]
     > Your storage account may have multiple private endpoints. For example, one storage account may have separate private endpoint for blob, file, and dfs (Azure Data Lake Storage Gen2). Add the managed identity to all these endpoints.