docs: add DmytroSkrypnyk as a contributor for translation

[allcontributors]

Add @DmytroSkrypnyk as a contributor for translation.

This was requested by stas-dolgachov in this comment

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
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