Public Preview: Azure NetApp Files new features

The following new features have been added in public preview in December 2021: * [Single-file snapshot restore](https://docs.microsoft.com/azure/azure-netapp-files/snapshots-restore-file-single) * [NFS protocol version conversion](https://docs.microsoft.com/azure/azure-netapp-files/convert-nfsv3-nfsv41) Feature regional coverage continues to expand as well for [standard network features](https://docs.microsoft.com/azure/azure-netapp-files/azure-netapp-files-network-topologies#supported-regions): * South Central US * West US 3 * Azure NetApp Files * Features * Regions & Datacenters * [ Azure NetApp Files](https://azure.microsoft.com/en-gb/services/netapp/)