move qos article

Author: duongau

articles/expressroute/TOC.yml

@@ -104,8 +104,8 @@
           href: how-to-routefilter-powershell.md
         - name: Azure CLI
           href: how-to-routefilter-cli.md
-        - name: QoS requirements
-          href: expressroute-qos.md
+      - name: QoS requirements
+        href: expressroute-qos.md
       - name: Routing Microsoft PSTN traffic over ExpressRoute
         href: using-expressroute-for-microsoft-pstn.md
     - name: Enable and disable peerings