Updated Russian translation of the https://www.w3.org/Style/Examples/007/units page

Dear Translators,

I have translated the recently updated version of the article on CSS length
units by Bert Bos (https://www.w3.org/Style/Examples/007/units) into
Russian. This page was already translated into Russian, but the existing
translation seems too outdated (it doesn't reflect the 2011 change of the
`px` unit definition) and has some other minor inaccuracies. Please check
the attached .tmpl file.

Best regards,
Ilya Streltsyn (Илья Стрельцын)
http://css-live.ru/

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