docs: update README [skip ci]

README_EN.md

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 **🔐 Self-hosted Claude API relay service with multi-account management** 
 
-[English](#english) • [中文文档](#中文文档) • [📸 Interface Preview](docs/preview.md) • [📢 Telegram Channel](https://t.me/claude_relay_service)
+[中文文档](README.md) • [Preview](https://demo.pincc.ai/admin-next/login) • [Telegram Channel](https://t.me/claude_relay_service)
 
 </div>
 
@@ -30,17 +30,6 @@
 
 📖 **Disclaimer**: This project is for technical learning and research purposes only. The author is not responsible for any account bans, service interruptions, or other losses caused by using this project.
 
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-> 💡 **Thanks to [@vista8](https://x.com/vista8) for the recommendation!**
-> 
-> If you're interested in Vibe coding, follow:
-> 
-> - 🐦 **X**: [@vista8](https://x.com/vista8) - Sharing cutting-edge tech trends
-> - 📱 **WeChat**: 向阳乔木推荐看  
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 ## 🤔 Is This Project Right for You?
 
 - 🌍 **Regional Restrictions**: Can't directly access Claude Code service in your region?