[docs] [issue34329] Document how to remove a suffix with pathlib.Path.with_suffix

[Stéphane Wirtel]

Stéphane Wirtel <stephane at wirtel.be> added the comment:

It's the same thing for everything, for example, in Karate, you will start with the white belt and with practice, you will get the black belt.

Thank you again for your contribution.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue34329>
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