doc: update feedback.

Author: jaywcjlove

feedback.md

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+<p align="right">
+  <a href="./feedback.zh.md">中文</a>
+</p>
+<!--rehype:style=float: right; bottom: -36px; position: relative;-->
+
+Feedback & Support
+===
+
+Thank you for using **Create Custom Symbols**! This tool allows you to convert any SVG icon into a custom SF Symbol, which you can import into Xcode and use in any project based on UIKit or SwiftUI.
+
+We highly value your feedback! If you encounter any issues, have any questions, or want to suggest new features, please feel free to contact us. Your feedback will help us continuously improve and ensure the best user experience.
+
+You can contact us via the in-app support or by sending an email to **[email protected]**. I am dedicated to providing support and ensuring you have a smooth and enjoyable experience. Thank you for choosing this tool!
+
+### Contact Information
+
+If you need support or encounter issues during use, you can contact us through the following channels:
+
+- [**Email Support**: [email protected]](mailto:[email protected])  
+- [**Social Media**: Twitter/x @jaywcjlove](https://twitter.com/jaywcjlove)  
+- [**GitHub Issue**](https://github.com/jaywcjlove/create-custom-symbols/issues/new/choose)  
+
+We will reply to your message as soon as possible to ensure you have a smooth and pleasant experience. Thank you for supporting Create Custom Symbols!

feedback.zh.md

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+<p align="right">
+  <a href="./feedback.md">English</a>
+</p>
+<!--rehype:style=float: right; bottom: -36px; position: relative;-->
+
+反馈与支持
+===
+
+感谢您使用 **Create Custom Symbols**！这款工具可以将任意 SVG 图标转换为自定义的 SF 符号，您可以将这些定制的符号导入 Xcode，并在任何基于 UIKit 或 SwiftUI 的项目中使用。
+
+我们非常重视你的反馈！如果在使用过程中遇到任何问题、疑问或有新功能建议，欢迎随时联系我们。你的意见将帮助我们持续改进，确保为你提供最佳的使用体验。
+
+你可以通过应用内或发送邮件至 **[email protected]** 联系我们。我致力于为你提供支持，确保你拥有流畅、愉快的使用体验。感谢你选择这个工具！  
+
+### 联系方式  
+
+如果你在使用过程中需要支持或遇到问题，可以通过以下渠道联系我们：  
+
+- [**邮件支持**: [email protected]](mailto:[email protected])  
+- [**社交媒体**: Twitter/x @jaywcjlove](https://twitter.com/jaywcjlove)  
+- [**GitHub 问题反馈**](https://github.com/jaywcjlove/create-custom-symbols/issues/new/choose)  
+
+我们将尽快回复你的信息，确保你拥有顺畅、愉快的使用体验。感谢你对 Create Custom Symbols 的支持！