[Docs]: When trying to access versions different that 3.17 I get 404 not found

### Current State

**Description of the current state/issue**:

**Link to the page**: https://apisix.apache.org/docs/apisix/3.16/

**Screenshots (if relevant)**:

### Desired State

**Description of the change you are proposing**:

### Would you like to fix this issue?

None

Start by opening the linked 3.16 documentation URL and inspect the website's version-routing configuration and available version paths. Determine which versions should resolve instead of returning 404, then verify the affected URLs after the routing or documentation change; the issue currently does not specify the intended version range.

Written by the indexing model from the issue text.