[docs] [issue35826] Typo in example for async with statement with condition

[Kevin Mai-Hsuan Chia]

Change by Kevin Mai-Hsuan Chia <kevin at mhchia.com>:


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keywords: +patch, patch, patch, patch
pull_requests: +11511, 11512, 11513, 11514
stage:  -> patch review

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue35826>
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