docs: add livekit plugin document link

Author: moonrailgun

client/web/src/plugin/manager.ts

@@ -24,7 +24,7 @@ class PluginManager {
     const installedPlugins = _uniqBy(
       [...builtinPlugins, ...(await this.getInstalledPlugins())],
       'name'
-    );
+    ); // 基于名称去重，确保不会重复安装插件
 
     const plugins = installedPlugins.map(({ name, url }) => ({
       name,

server/plugins/com.msgbyte.livekit/web/plugins/com.msgbyte.livekit/manifest.json

@@ -3,6 +3,7 @@
   "name": "com.msgbyte.livekit",
   "url": "{BACKEND}/plugins/com.msgbyte.livekit/index.js",
   "icon": "{BACKEND}/plugins/com.msgbyte.livekit/assets/icon.png",
+  "documentUrl": "https://tailchat.msgbyte.com/docs/advanced-usage/plugins/com.msgbyte.livekit",
   "version": "0.0.0",
   "author": "moonrailgun",
   "description": "Add livekit to provide meeting and live streaming feature",