Update private-endpoint-dns.md

Author: malopMSFT

articles/private-link/private-endpoint-dns.md

@@ -67,6 +67,7 @@ For Azure services, use the recommended zone names as described in the following
 | SignalR (Microsoft.SignalRService/SignalR ) / signalR | privatelink.service.signalr.net | service.signalr.net |
 | Azure Monitor (Microsoft.Insights/privateLinkScopes) / azuremonitor | privatelink.monitor.azure.com | monitor.azure.com |
 | Cognitive Services (Microsoft.CognitiveServices/accounts) / account | privatelink.cognitiveservices.azure.com  | cognitiveservices.azure.com  |
+| Azure File Sync (Microsoft.StorageSync) / storageSyncServices |  privatelink.afs.azure.net  |  afs.azure.net  |
 
 
 ## DNS configuration scenarios