[Bug]: docs links sometimes have incorrect extension

[Lewiscowles1986]

Actual Behavior

If I visit https://openapi-core.readthedocs.io/en/latest/integrations/fastapi.html and click "see starlette integration"

Then I get a 404, because the extension is .rst
https://openapi-core.readthedocs.io/en/latest/integrations/starlette.rst

Expected Behavior

When I use the side-menu, I can navigate to the same page.
Additionally on the 404 page, I don't have a menu, so I have to use the browser back-button, or delete the path, before navigating to https://openapi-core.readthedocs.io/en/latest/integrations/starlette.html

Steps to Reproduce

visit https://openapi-core.readthedocs.io/en/latest/integrations/fastapi.html
scroll to the bottom of the main content page.
click on the "see starlette integration" link
404 😢

OpenAPI Core Version

main

OpenAPI Core Integration

docs

Affected Area(s)

docs

References

this is your documentation page https://openapi-core.readthedocs.io/en/latest/integrations/fastapi.html

Anything else we need to know?

No thanks, but this has been quite a journey to fill out as a user.

Would you like to implement a fix?

No