[docs] [issue17844] Add link to alternatives for bytes-to-bytes codecs

[Nick Coghlan]

Nick Coghlan added the comment:

Thanks for initiating this Serhiy :)

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resolution:  -> fixed
stage: patch review -> committed/rejected
status: open -> closed

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue17844>
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