[docs] [issue18588] timeit examples should be consistent

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

In command-line invocation the gc is disabled. And timit.repeat() is used instead of timit.timit().

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nosy: +serhiy.storchaka

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18588>
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