Update toc.yml

Author: chriswhilar

articles/communication-services/toc.yml

@@ -388,6 +388,8 @@ items:
       href: samples/ui-library-cross-platform.md?pivots=platform-maui
     - name: Web calling sample
       href: samples/web-calling-sample.md
+    - name: Web calling - Push notifications sample
+      href: samples/web-calling-push-notifications-sample.md
     - name: Authentication service hero sample
       href: samples/trusted-auth-sample.md
   - name: Chat