Update README-cn.md

Author: aidlearning

README-cn.md

@@ -86,7 +86,7 @@ AI编程平台由深度学习框架和Python可视化编程框架（Python IDE
 
 ##  交流与反馈
 - [更多参考](intr.md)
-<img src="images/QQqun.png" height="256"/>
+<img src="https://i.loli.net/2020/04/11/TtfxFj2rnkB7ZVM.png" height="256"/>
 
 - [推特-twitter](https://twitter.com/aidlearning)