Update index.yml

Author: cherylmc

articles/virtual-wan/index.yml

@@ -57,12 +57,12 @@ landingContent:
     linkLists:
       - linkListType: concept
         links:
+          - text: Migrate to Virtual WAN
+            url: migrate-from-hub-spoke-topology.md
           - text: Global transit network architecture
             url: virtual-wan-global-transit-network-architecture.md
           - text: SD-WAN connectivity architecture
             url: sd-wan-connectivity-architecture.md
-          - text: Migrate to Virtual WAN
-            url: migrate-from-hub-spoke-topology.md
  # Card
   - title: Reference
     linkLists: