Update README.md

Add Chinese Telegram group link.

README.md

@@ -28,7 +28,7 @@ This repository contains several firmwares, modified by:
 
 Special thanks also goes to [@sq5bpf](https://github.com/sq5bpf) for his [work](https://github.com/sq5bpf/uvk5-reverse-engineering) in reverse engineering the communication protocols, frequency storage formats, memory maps and more.
 
-Discussion of these firmwares, and other things related to the radio, can be done in the Telegram groups: [English](https://t.me/quansheng_uvk5_en), [Russian](https://t.me/uv_k5), [Spanish.](https://t.me/QuanShengES)
+Discussion of these firmwares, and other things related to the radio, can be done in the Telegram groups: [English](https://t.me/quansheng_uvk5_en), [Russian](https://t.me/uv_k5), [Spanish](https://t.me/QuanShengES), [Chinese.](https://t.me/uvk5cn)
 
 You can support the authors with a donation at the following links: