addind conflict resolving custom tag

Author: Shamkh

articles/communication-services/quickstarts/advanced-messaging/whatsapp/get-started.md

@@ -9,6 +9,7 @@ ms.author: memontic
 ms.date: 02/29/2024
 ms.topic: quickstart
 ms.service: azure-communication-services
+ms.custom: devx-track-extended-java, devx-track-js
 zone_pivot_groups: acs-js-csharp-java-python
 ---