bug(ci): deadlink checker didn't find the wrong url in sidebar

[seeflood]

What happened:
@wenxuwan found that the link in the sidebar is wrong, see https://mosn.io/layotto/#/zh/design/oss/oss-api-design

The problem is that our deadlink checker didn't find it :(
The checker runs successfully without noticing this link:
https://github.com/mosn/layotto/actions/workflows/dead-link-checker.yaml

What you expected to happen:
deadlink checker should find out the wrong urls

How to reproduce it (as minimally and precisely as possible):
open https://mosn.io/layotto/#/zh/design/oss/oss-api-design

Anything else we need to know?:

[seeflood]

cc @Xunzhuo

[seeflood]

I found that curl -w %{http_code} https://mosn.io/layotto/#/zh/design/oss/oss-api-design returns 200, not 404
So it's docsify's problem, not our deadlink checker's problem. :(
This issue is not a high priority

[rayowang]

This looks like a routing problem with webserver configuration.

[seeflood]

Yes, but I don't know how to configure the docsify server to fix this issue 😢