[issue34261] Add description to clinic.py

Change by Pablo Galindo Salgado : -- resolution: -> fixed stage: -> resolved status: open -> closed ___ Python tracker ___ ___ Pyt

[issue34261] Add description to clinic.py

New submission from Tim Hoffmann : When trying to update a docstring of a CPython builtin, I had problems finding out what Argument Clinic actually does. First, I looked at the devguide, which does only mention that the clinic exists, but not what it does or how it's used. Next, I tried "cli