Updating to Azure Virtual Desktop

Updating old Windows Virtual Desktop to the new service name of Azure Virtual Desktop

Author: JasonBeck2

articles/virtual-machines/TOC.yml

@@ -534,7 +534,7 @@
         - name: Windows
           displayName: Image builder, images, building, PowerShell
           href: ./windows/image-builder-powershell.md
-        - name: Windows Virtual Desktop
+        - name: Azure Virtual Desktop
           href: ./windows/image-builder-virtual-desktop.md
       - name: Security
         items: