update `contact`

README.md

@@ -10,6 +10,7 @@
 - 项目官网  **[DragonOS.org](https://dragonos.org)**
 - 项目文档  **[docs.DragonOS.org](https://docs.dragonos.org)**
 - 开源论坛  **[bbs.DragonOS.org](https://bbs.dragonos.org)**
+- 开发交流QQ群 **115763565**
  
 ## 开发环境
 
@@ -101,7 +102,7 @@ fslongjin
 
 ## 赞赏
 
-如果你愿意的话，点击下面的链接，请我喝杯咖啡吧~请在付款备注处留下您的github ID，我会将其贴到这个页面
+如果你愿意的话，点击下面的链接，请我喝杯咖啡吧~请在付款备注处留下您的github ID，我会将其贴到这个页面. 捐赠所得资金将用于网站、论坛社区维护以及一切与本项目所相关的用途。
 
 [捐赠 | 龙进的博客](https://longjin666.cn/?page_id=54)
 

README_EN.md

@@ -102,7 +102,7 @@ Blog：[longjin666.cn](https://longjin666.cn)
 
 ## Reward
 
-If you like, click the link below and buy me a cup of coffee ~ please leave your GitHub ID in the payment remarks and I will post it to this page
+If you like, click the link below and buy me a cup of coffee ~ please leave your GitHub ID in the payment remarks and I will post it to this page. The donated funds will be used for website, forum community maintenance and all purposes related to the project.
 
 [The reward webpage](https://longjin666.cn/?page_id=54)
 

docs/community/contact/index.rst

@@ -5,4 +5,4 @@
 
 工作邮箱: [email protected]
 
-[内容待完善]
+开发交流QQ群： 115763565