fix TOC link

Author: JnHs

articles/azure-portal/TOC.yml

@@ -9,7 +9,7 @@
   - name: Quickstarts
     items:
     - name: Create a VM in the portal
-      href: ../virtual-machines/windows/quick-create-portal.md?context=/azure/azure-portal/context/context
+      href: /azure/virtual-machines/windows/quick-create-portal?context=/azure/azure-portal/context/context
     - name: Create a dashboard
       items:
       - name: Azure CLI