📝 Update usage of Token model in security docs

[piotrszacilowski]

In the documentation regarding security in the code were created Token model, while it was not used. I have fixed it.

[github-actions]

📝 Docs preview for commit 443adb8 at: https://641f65a47164c01300f564f8--fastapi.netlify.app

[piotrszacilowski]

anyone willing to review?

[tiangolo]

📝 Docs preview for commit 4cd6cc9 at: https://fdcbc765.fastapitiangolo.pages.dev

[alejsdev]

Thanks for your help! @piotrszacilowski 🙂

The Token was actually used in the response_model but indeed it was better to return an instance of it.

I also updated the response model to use the Token as a return type and updated the highlighted lines in the docs.

Thanks 😸