Updated ChangedLog for Subnet NetworkIdentifier. (#25352)

Co-authored-by: Bhupesh Bhatt <[email protected]>

Author: bhupeshbhatt1985

src/Network/Network/ChangeLog.md

@@ -19,6 +19,7 @@
 --->
 
 ## Upcoming Release
+* Updated cmdlet `Add-AzVirtualNetworkSubnetConfig`, `Set-AzVirtualNetworkSubnetConfig` and `New-AzVirtualNetworkSubnetConfig` to support Network Identifier for Subnet Service Endpoint.
 * Added cmdlet `Restart-AzNetworkVirtualAppliance` for allowing a restart of Network Virtual Appliance instances from the customer subscription.
 * Fixed a bug in `Update-AzNetworkVirtualApplianceConnection`
 * Added cmdlet `New-AzVirtualApplianceNetworkProfile` to build network profile for network virtual appliance and pass as a parameter.