feat: add API documents

README.md

@@ -12,7 +12,7 @@
 [![Telegram Channel](https://img.shields.io/badge/news-t.me%2Fsspanel_uim-0d86d7?style=flat-square)](https://t.me/sspanel_uim)
 [![Telegram Chat](https://img.shields.io/badge/chat-t.me%2Fssunion-0d86d7?style=flat-square)](https://t.me/ssunion)
 
-[演示站点](https://sspanel.host) | [使用文档](https://wiki.sspanel.host) | [更新日志](https://github.com/Anankke/SSPanel-Uim/releases) | [Telegram 频道](https://t.me/sspanel_uim) | [Telegram 水群](https://t.me/ssunion)
+[演示站点](https://sspanel.host) | [使用文档](https://wiki.sspanel.host) | [更新日志](https://github.com/Anankke/SSPanel-Uim/releases) | [Telegram 频道](https://t.me/sspanel_uim) | [Telegram 水群](https://t.me/ssunion) | [API 文档](https://sspanel-uim.github.io/API-documents/)
 
 ## 简介