Update menu.md

[super622]

Please make sure these boxes are checked before submitting your PR, thank you!

• [ ] Make sure you follow contributing guide English | (中文 | Español | Français).
• [ ] Make sure you are merging your commits to dev branch.
• [ ] Add some descriptions and refer to relative issues for your PR.

[pull-request-triage[bot]]

👋 @superhorse622, seems like this is your first time contribution to element-plus.

• Please make sure that you have read our guidelines and code of conduct before making a contribution.
• You can comment with /label Components:[component_name] to add a label for which component you are working on.
• You may join our for staying tuned.

[github-actions[bot]]

Hello @superhorse622, thank you for contributing to element-plus, please see our guideline to see how to make contribution

[github-actions[bot]]

[github-actions[bot]]

🧪 Playground Preview: https://element-plus.run/?pr=15850 Please comment the example via this playground if needed.