update readme

Author: hackware1993

README.md

@@ -1572,6 +1572,10 @@ Subscribe to my WeChat official account to get the latest news of ConstraintLayo
 also share some high-quality, unique, and thoughtful Flutter technical articles.
 ![official_account.webp](https://github.com/hackware1993/flutter-constraintlayout/blob/master/official_account.webp?raw=true)
 
+Scan the code to add my personal WeChat, pull you into the Flutter technical exchange WeChat group,
+please note 【add technical group】
+![communication.webp](https://github.com/hackware1993/flutter-constraintlayout/blob/master/communication.webp?raw=true)
+
 # License
 
 ```

README_CN.md

@@ -1525,6 +1525,9 @@ [email protected]
 订阅我的微信公众号以及时获取约束布局的最新动态。后续也会分享一些高质量的、独特的、有思想的 Flutter 技术文章。
 ![official_account.webp](https://github.com/hackware1993/flutter-constraintlayout/blob/master/official_account.webp?raw=true)
 
+扫码加我个人微信，拉你进 Flutter 技术交流微信群，请备注【加技术群】
+![communication.webp](https://github.com/hackware1993/flutter-constraintlayout/blob/master/communication.webp?raw=true)
+
 # 协议
 
 ```