Update astrbot/base/paths.py

Co-authored-by: sourcery-ai[bot] <58596630+sourcery-ai[bot]@users.noreply.github.com>

Author: LIghtJUNction

astrbot/base/paths.py

@@ -86,9 +86,7 @@ def is_root(cls, path: Path) -> bool:
         if not path.exists() or not path.is_dir():
             return False
         # 检查此目录内是是否包含.astrbot标记文件
-        if not (path / ".astrbot").exists():
-            return False
-        return True
+        return bool((path / ".astrbot").exists())
 
     def reload(self) -> None:
         """重新加载环境变量."""