chore(theme-translations): complete zh-Hant translations

[qwerzl]

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Deploy preview: https://deploy-preview-_____--docusaurus-2.netlify.app/

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[github-actions]

⚡️ Lighthouse report for the deploy preview of this PR

URL	Performance	Accessibility	Best Practices	SEO	PWA	Report
/	🟢 95	🟢 97	🟢 92	🟢 100	🟠 89	Report
/docs/installation	🟠 75	🟢 98	🟢 92	🟢 100	🟠 89	Report

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[Josh-Cena]

Nice to see you here. Some suggestions to be consistent with other translations.

[qwerzl]

Thanks for the suggestion!

[Josh-Cena]

LGTM. Welcome to Docusaurus :)