Update CI/CD badge (#173)

Author: sierpinskid

README.md

@@ -21,8 +21,8 @@
         <img alt="GitHub release (latest by date)" src="https://img.shields.io/github/v/release/GetStream/stream-chat-unity">
     </a>
     &nbsp;
-	  <a href="https://github.com/GetStream/stream-chat-unity/actions/workflows/ci.yml">
-        <img src="https://github.com/GetStream/stream-chat-unity/actions/workflows/ci.yml/badge.svg?branch=develop" alt="CI">
+	  <a href="https://github.com/GetStream/stream-chat-unity/actions/workflows/main.ci.cd.workflow.yml">
+        <img src="https://github.com/GetStream/stream-chat-unity/actions/workflows/main.ci.cd.workflow.yml/badge.svg?branch=develop" alt="CI">
     </a>
 </p>