API page doesn't show titles anymore

In the current build, there is a bug. All titles for API page are missing.

Latest build:
<img width="960" alt="image" src="https://github.com/hapijs/joi.dev/assets/583657/3dbf4882-1b5c-4c63-aa27-8a8e9d36b2f4">

Current version in production:
<img width="950" alt="image" src="https://github.com/hapijs/joi.dev/assets/583657/550e0c2d-2206-4aee-b3d4-2e0b348bb1f8">
