[feature] Improve documentation 'Authentication with the API'

[chri2]

Is your feature request related to a problem ?

tried to follow https://docs.gotosocial.org/en/latest/api/authentication/ and had problems

Describe the solution you'd like.

In the api documentation the url template in Authorizing your application contains client_id=your_new_client_id-id which I found confusing, because above it says that I'd need to save my client_id. If I replace client_id in the template I get a wrong request.

Above the template the field should be named the same as in the template: your_new_client_id and I'd rename it from your_new_client_id-id to just your_new_client_id in the template itself to make things clearer.

Describe alternatives you've considered.

saying nothing and believe that others will guess the right solution by themselfs 😂

Additional context.

No response