A 404 error found in Combo page #4552

Describe the bug

This URL is 404 not found, I don't know which demo do you want to display.

Your Example Website or App

https://g6.antv.antgroup.com/manual/middle/elements/combos/default-combo

Steps to Reproduce the Bug or Issue

1. visit the https://g6.antv.antgroup.com/manual/middle/elements/combos/default-combo
2. click the link: "Demo" located here
3. 404 not found error

Expected behavior

I want to see a simple combo demo.

Screenshots or Videos

Platform

• OS: [e.g. macOS, Windows, Linux]
• Browser: [e.g. Chrome, Safari, Firefox]
• Version: [e.g. 91.1]

Additional context

No response