Access api documentation

[fe51]

The link to api doc via Heroku is dead : http://pyronear-api.herokuapp.com/docs, it should be either deleted or updated to the relevant one.

Thanks a lot !

[frgfm]

I have removed it, I'll see if we can get a static version of the redoc on GitHub pages to solve this problem

[frgfm]

Closing this as the integration with Heroku was removed so the API documentation can be accessed on deployed instances or using the openai spec (might consider deploying Mintlify docs that will read this dynamically)