[docs] [issue29062] hashlib documentation link error

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

I didn't tested my suggestion. If it solves the issue and makes all related references correct, feel free to push the patch Inada.

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assignee: docs at python -> inada.naoki
stage:  -> commit review

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29062>
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