Add to the architecture card

Author: cherylmc

articles/virtual-wan/index.yml

@@ -11,7 +11,7 @@ metadata:
   ms.topic: landing-page
   author: cherylmc
   ms.author: cherylmc
-  ms.date: 11/13/2019
+  ms.date: 05/08/2020
 
 # linkListType: architecture | concept | deploy | download | get-started | how-to-guide | learn | overview | quickstart | reference | tutorial | whats-new
 
@@ -59,6 +59,8 @@ landingContent:
         links:
           - 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