docs: update ru translation for env vars page

[ronanru]

✅ Checklist

• I have followed every step in the contributing guide (updated 2022-10-06).
• The PR title follows the convention we established conventional-commit
• I performed a functional test on my final commit

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Changelog

Updated the Environment Variables page in Russian.

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Screenshots

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Latest commit: 1b53d54

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Name	Status	Preview	Comments	Updated
create-t3-app	✅ Ready (Inspect)	Visit Preview	💬 Add your feedback	Feb 8, 2023 at 1:41PM (UTC)

[github-actions]

Hey t3-oss/translators!

This PR contains changes to your language. Please review the changes ❤️.

RU: @AmadeusTwi, @ronanru, @JohnBakhmat

[github-actions]

⚡️ Lighthouse report for the changes in this PR:

Category	Score
🟢 Performance	100
🟢 Accessibility	100
🟢 Best practices	100
🟢 SEO	93
🟠 PWA	54

Lighthouse ran on https://create-t3-app-git-fork-ronanru-next-t3-oss.vercel.app/

[c-ehrlich]

ready to merge?

[JohnBakhmat]

ready to merge?

it is tho lets wait for @AmadeusTwi's checkmark

[AmadeusTwi]

LGTM