at: add Simplified Chinese translation

[zhuhongboAAA]

Checklist

• The page(s) are in the correct platform directories: common, linux, osx, windows, sunos, android, etc.
• The page description(s) have links to documentation or a homepage.
• The page(s) follow the content guidelines.
• The page(s) follow the style guide.
• The PR contains at most 5 new pages.
• The PR is authored by me, or has been human-reviewed if it was created with AI or machine translation software.
• The PR title conforms to the recommended templates.
• Version of the command being documented (if known):

Reference issue: #

[ivanbaluta]

Suggested change

	- 以交互方式创建命令并在 5 分钟后执行（完成后按 `Ctrl + D`）：
	- 以交互方式创建命令并在 5 分钟后执行（完成后按 `<Ctrl d>`）：

[ivanbaluta]

Suggested change

	- 启动 atd 守护进程：
	- 启动 `atd` 守护进程：

[ivanbaluta]

Suggested change

	- 列出当前用户的所有排队任务（与 atq 相同）：
	- 列出当前用户的所有排队任务（与 `atq` 相同）：