Adding Call Automation reference to TOC

Adding Call Automation reference to TOC

Author: minwoolee-msft

articles/communication-services/toc.yml

@@ -428,6 +428,12 @@ items:
       href: /java/api/com.azure.android.communication.calling
     - name: Calling (iOS)
       href: /objectivec/communication-services/calling/
+  - name: Call Automation libraries
+    items:
+    - name: Call Automation (.NET)
+      href: https://azure.github.io/azure-sdk-for-net/callautomation.html
+    - name: Call Automation (Java)
+      href: https://azure.github.io/azure-sdk-for-java/callautomation.html
   - name: Chat libraries
     items:
     - name: Chat (JavaScript)