fix: update startup command to 'astrbot run' in all README files (#6189)

Updated the quick start command from 'astrbot' to 'astrbot run' across all
language versions of README documentation for consistency and correctness.

Co-authored-by: DroidKali <DroidKali@users.noreply.github.com>
Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

README_zh-TW.md

@@ -78,7 +78,7 @@ AstrBot 是一個開源的一站式 Agent 聊天機器人平台，可接入主
 ```bash
 uv tool install astrbot
 astrbot init # 僅首次執行此命令以初始化環境
-astrbot
+astrbot run
 ```
 
 > 需要安裝 [uv](https://docs.astral.sh/uv/)。