Update chat-hero-sample.md

Author: tomkau

articles/communication-services/samples/chat-hero-sample.md

@@ -19,7 +19,7 @@ ms.subservice: chat
 > [This sample is available **on GitHub**.](https://github.com/Azure-Samples/communication-services-web-chat-hero)
 
 
-The Azure Communication Services **Group Chat Hero Sample** demonstrates how the Communication Services Chat Web SDK can be used to build a group calling experience.
+The Azure Communication Services **Group Chat Hero Sample** demonstrates how the Communication Services Chat Web SDK can be used to build a group chat experience.
 
 In this Sample quickstart, we'll learn how the sample works before we run the sample on your local machine. We'll then deploy the sample to Azure using your own Azure Communication Services resources.