removing duplicate href

Author: Jak-MS

articles/virtual-network/toc.yml

@@ -263,7 +263,6 @@
       href: move-across-regions-vnet-portal.md
     - name: Virtual networks - PowerShell
       href: move-across-regions-vnet-powershell.md
-      href: move-across-regions-vnet-powershell.md
     - name: Public IPs - Portal
       href: move-across-regions-publicip-portal.md
     - name: Public IPs - PowerShell