Update toc.yml

Updated toc with data-loss-prevention.md

Author: angiurgiu

articles/communication-services/toc.yml

@@ -421,6 +421,10 @@ items:
       href: how-tos/call-automation/play-action.md
     - name: Gather user input with Recognize action 
       href: how-tos/call-automation/recognize-action.md
+  - name: Using the Chat SDK
+    items: 
+    - name: Integrate with Data Loss Prevention policies
+      href: how-tos/chat-sdk/data-loss-prevention.md
 - name: Samples
   items:
   - name: Overview