[docs] [issue35138] timeit documentation should have example with function arguments

[Serhiy Storchaka]

Change by Serhiy Storchaka <storchaka+cpython at gmail.com>:


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keywords: +easy
stage:  -> needs patch
type:  -> enhancement
versions: +Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue35138>
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