fix: correct project root directory name in README architecture section

Changed `tsmusicbot/` to `teamspeak-music-bot/` in the project
architecture directory tree to match the actual repository name.

https://claude.ai/code/session_01VTscSE9PxD6qwF56WBMunQ

README.md

@@ -279,7 +279,7 @@ sudo systemctl start tsmusicbot
 ## 项目架构
 
 ```
-tsmusicbot/
+teamspeak-music-bot/
 ├── src/                        # 后端源码 (TypeScript)
 │   ├── audio/                  # 音频管线：FFmpeg → PCM → Opus → 20ms 帧
 │   │   ├── encoder.ts          # Opus 编码器 (@discordjs/opus)