quick correction

Author: kevinguo-ed

articles/azure-web-pubsub/socket-io-serverless-quickstart.md

@@ -9,7 +9,7 @@ ms.service: azure-web-pubsub
 ms.topic: tutorial
 ---
 
-# Quickstart: Build chat app with Azure Function in Socket.IO Serverless Mode
+# Quickstart: Build chat app with Azure Function in Socket.IO Serverless Mode (Preview)
 
 In this article, you'll learn how to build a chat app using Web PubSub for Socket.IO in Serverless Mode with Azure Functions. The tutorial will guide you through securing your app with identity-based authentication, while working online.
 

articles/azure-web-pubsub/socket-io-serverless-tutorial.md

@@ -9,7 +9,7 @@ ms.service: azure-web-pubsub
 ms.topic: tutorial
 ---
 
-# Tutorial: Build chat app with Azure Function in Serverless Mode
+# Tutorial: Build chat app with Azure Function in Serverless Mode (Preview)
 
 This tutorial walks you through how to create a Web PubSub for Socket.IO service in Serverless Mode and build a chat app integrating with Azure Function.