doc: qq group

README.md

@@ -33,7 +33,7 @@ PDF scientific paper translation and bilingual comparison.
 - 🌐 Support [multiple languages](#language), and diverse [translation services](#services).
 - 🤖 Provides [commandline tool](#usage), [interactive user interface](#gui), and [Docker](#docker)
 
-Feel free to provide feedback in [GitHub Issues](https://github.com/Byaidu/PDFMathTranslate/issues) or [Telegram Group](https://t.me/+Z9_SgnxmsmA5NzBl).
+Feel free to provide feedback in [GitHub Issues](https://github.com/Byaidu/PDFMathTranslate/issues), [Telegram Group](https://t.me/+Z9_SgnxmsmA5NzBl) or [QQ Group](https://qm.qq.com/q/DixZCxQej0).
 
 <h2 id="updates">Updates</h2>
 

README_zh-CN.md

@@ -33,7 +33,7 @@
 - 🌐 支持 [多种语言](#language) 和 [诸多翻译服务](#services)
 - 🤖 提供 [命令行工具](#usage)，[图形交互界面](#gui)，以及 [容器化部署](#docker)
 
-欢迎在 [GitHub Issues](https://github.com/Byaidu/PDFMathTranslate/issues) 或 [Telegram 用户群](https://t.me/+Z9_SgnxmsmA5NzBl) 中提供反馈。
+欢迎在 [GitHub Issues](https://github.com/Byaidu/PDFMathTranslate/issues)、[Telegram 用户群](https://t.me/+Z9_SgnxmsmA5NzBl) 或 [QQ 用户群](https://qm.qq.com/q/DixZCxQej0) 中提供反馈。
 
 <h2 id="updates">近期更新</h2>