Expand quickstarts by default

Author: David Knappett

articles/virtual-desktop/TOC.yml

@@ -11,6 +11,7 @@
   - name: Azure Virtual Desktop (classic) documentation
     href: ./virtual-desktop-fall-2019/tenant-setup-azure-active-directory.md
 - name: Quickstarts
+  expanded: true
   items:
   - name: Getting started with Azure Virtual Desktop
     href: getting-started-feature.md