translate Grid documents into Japanese

[rerorero]

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Description

This PR translates Grid documents into Japanese.

Motivation and Context

Types of changes

• Change to the site (I have double-checked the Netlify deployment, and my changes look good)
• Code example added (and I also added the example to all translated languages)
• Improved translation
• Added new translation (and I also added a notice to each document missing translation)

Checklist

• I have read the contributing document.
• I have used hugo to render the site/docs locally and I am sure it works.

[CLAassistant]

All committers have signed the CLA.

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[rerorero]

What's wrong? 🤔

[diemol]

Thank you for this PR. I need to hold it for a while because I am rewriting parts of the Grid documentation, given that is it not easy to understand.

[rerorero]

Okay, I will revisit it once you update the documents.

[diemol]

@rerorero Sorry, I forgot to reply. The docs have been updated already a while ago. Would you like to have a look again?

[rerorero]

Thank you for letting me know, let me take a look again.

[rerorero]

@diemol I updated this branch based on the latest trunk. PTAL.

[rerorero]

@kzhirata Thank you for taking a look, I updated according to your comments.

[kzhirata]

@rerorero I've reviewed "website_and_docs/content/documentation/grid/getting_started.ja.md" and add some comments.

The rest of my review is below.

• website_and_docs/content/documentation/grid/configuration/_index.ja.md
• website_and_docs/content/documentation/grid/configuration/cli_options.ja.md
• website_and_docs/content/documentation/grid/configuration/help.ja.md
• website_and_docs/content/documentation/grid/configuration/toml_options.ja.md

[kzhirata]

@rerorero I’ve reviewed the below, and added some comments.

• website_and_docs/content/documentation/grid/configuration/_index.ja.md
• website_and_docs/content/documentation/grid/configuration/cli_options.ja.md
• website_and_docs/content/documentation/grid/configuration/help.ja.md
• website_and_docs/content/documentation/grid/configuration/toml_options.ja.md

Could you please check my comment?

[rerorero]

Thanks, updated again.

[kzhirata]

@rerorero There are still some words to bold.

[rerorero]

oops, sorry for this bold nightmare... updated again.

[kzhirata]

@rerorero Last 3 comments.
Could you check my comment, please?

[rerorero]

Sorry for late, updated again.

[kzhirata]

@rerorero There are two points I pointed out last time, so could you please fix them?

[rerorero]

Fixed again.

[kzhirata]

LGTM

[kzhirata]

Thank you @rerorero !