fix(plugin-api-docgen): add Russian support

[liamli-0822]

Summary

add Russian support

Related Issue

#1872

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

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Lighthouse	1 paths audited Performance: 86 (🟢 up 1 from production) Accessibility: 97 (no change from production) Best Practices: 92 (no change from production) SEO: 100 (no change from production) PWA: - View the detailed breakdown and full score reports

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[SoonIter]

LGTM ❤️️

BTW, Rspress repo is weaponed by biome, I usually lint all the files by npx biome check . --fix --unsafe --diagnostic-level=warn