Merge pull request #227644 from dlepow/wpsland

[Web PubSub] Add training link to landing page

Author: v-dirichards

articles/azure-web-pubsub/index.yml

@@ -58,6 +58,8 @@ landingContent:
         links:
           - text: Introduction to Azure Web PubSub
             url: /training/modules/introduction-to-azure-web-pubsub/
+          - text: Build your first real-time chat app
+            url: /training/modules/build-chat-app-web-pubsub/
 
   # Card
   - title: Live Demos