🌐 Add Japanese translation for Deployment - Manually

[tokusumi]

This PR translates deployment/manually.md in Japanese.

To all reviewers. This section is only separated from #1948 (with few changes), but please review it.

[codecov]

Codecov Report

Merging #2313 (cb0dd2a) into master (c7742e3) will not change coverage.
The diff coverage is n/a.

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  Coverage   100.00%   100.00%           
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  Files          243       243           
  Lines         7419      7419           
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  Hits          7419      7419           

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[github-actions]

📝 Docs preview for commit 9825cb8 at: https://5fa535a26148c3ff33a73210--fastapi.netlify.app

[komtaki]

Thank you for the tough work.
LGTM 👍

[delhi09]

It looks mostly good.
But the translation of the one "Tip" section seems to be missing.

[delhi09]

It seems the translation of the following sentences is missing.

Tip
By adding the standard, Uvicorn will install and use some recommended extra dependencies.
That including uvloop, the high-performance drop-in replacement for asyncio, that provides the big concurrency performance boost.

[github-actions]

📝 Docs preview for commit 94cd37a at: https://5fec825a8d5b5e52728be9b1--fastapi.netlify.app

[tokusumi]

@delhi09 Thank you for review!
I updated translation. please check it again.

[delhi09]

LGTM！

[tiangolo]

Thank you very much for updating all this @tokusumi 🙇 🍰

And as always, thanks @komtaki and @delhi09 for the reviews 🔍 ☕