doc: update feedback.

feedback.md

@@ -1,3 +1,9 @@
+<p align="right">
+  <a href="./feedback.zh.md">中文</a>
+</p>
+<!--rehype:style=float: right; bottom: -36px; position: relative;-->
+
+
 Feedback & Support
 ===
 
@@ -9,5 +15,6 @@ If you encounter any issues or need support while using our app, feel free to re
 
 - **Email Support**: [kennyiseeyou@gmail.com](mailto:kennyiseeyou@gmail.com)
 - **Social Media**: [Twitter](https://twitter.com/jaywcjlove)
+- **GitHub Issue Submission**: [GitHub](https://github.com/jaywcjlove/quick-rss/issues/new/choose)
 
 We will respond to your message as soon as possible. Thank you for supporting our app!

feedback.zh.md

@@ -1,3 +1,8 @@
+<p align="right">
+  <a href="./feedback.md">English</a>
+</p>
+<!--rehype:style=float: right; bottom: -36px; position: relative;-->
+
 反馈与支持
 ===
 
@@ -9,5 +14,6 @@
 
 - **电子邮件支持**: [kennyiseeyou@gmail.com](mailto:kennyiseeyou@gmail.com)
 - **社交媒体**: [Twitter](https://twitter.com/jaywcjlove)
+- **GitHub Issue 提交**: [Twitter](https://github.com/jaywcjlove/quick-rss/issues/new/choose)
 
 我们会尽快回复您的消息，感谢您对我们应用的支持！