Update readme

Author: wyx2685

readme.md

@@ -43,7 +43,7 @@
 Thanks to the open source project license provided by [Jetbrains](https://www.jetbrains.com/)
 
 ## Community
-🔔Telegram Channel: [@v2board](https://t.me/v2board)  
+🔔Telegram Group: [@unofficialV2board](https://t.me/unofficialV2board)  
 
 ## How to Feedback
 Follow the template in the issue to submit your question correctly, and we will have someone follow up with you.