fix(translation): Include command for removing orphaned files for Chinese (#656)

* fix(translation): Include command for removing orphaned files for Chinese

Add command to remove orphaned files from OpenDAL storage for Chinese.

* Fix malformed code fence syntax

* adjust indent

---------

Co-authored-by: Riskey <riskey47@dify.ai>

Author: am-abudu

zh/self-host/troubleshooting/storage-and-migration.mdx

@@ -93,7 +93,8 @@ title: 存储与迁移
    ```
 
 2. **从存储中删除孤立文件**
-   ```bashd-files-on-storage
+   ```bash
+   docker exec -it docker-api-1 flask remove-orphaned-files-on-storage
    # 使用 -f 标志跳过确认
    ```