fix: broken ja-JP table

[tosaka-n]

Why:

• Table layout is broken in the Japanese version of the document.
• FYI: https://docs.github.com/ja/organizations/managing-access-to-your-organizations-repositories/repository-roles-for-an-organization#permissions-for-each-role

What's being changed (if available, include any code snippets, screenshots, or gifs):

Check off the following:

• I have reviewed my changes in staging (look for the "Automatically generated comment" and click the links in the "Preview" column to view your latest changes).
• For content changes, I have completed the self-review checklist.

Writer impact (This section is for GitHub staff members only):

• This pull request impacts the contribution experience
  • I have added the 'writer impact' label
  • I have added a description and/or a video demo of the changes below (e.g. a "before and after video")

[welcome]

Thanks for opening this pull request! A GitHub docs team member should be by to give feedback soon. In the meantime, please check out the contributing guidelines.

[github-actions]

👋 Hey there spelunker. It looks like you've modified some files that we can't accept as contributions. The complete list of files we can't accept are:
.devcontainer/**
.github/actions-scripts/**
.github/workflows/**
.github/CODEOWNERS
assets/fonts/**
data/graphql/**
Dockerfile*
lib/graphql/**
lib/redirects/**
lib/rest/**
lib/webhooks/**
lib/search/indexes/**
package*.json
scripts/**
translations/**
content/actions/deployment/security-hardening-your-deployments/**

You'll need to revert all of the files you changed in that list using GitHub Desktop or git checkout origin/main <file name>. Once you get those files reverted, we can continue with the review process.

[cmwilson21]

@tosaka-n Thanks for opening a PR! ✨

As you correctly stated in your issue, we are unable to accept changes to any of our translated files. Our translation process involves an integration with an external service, where all translation activity happens. We hope to eventually open up the translation process to the open-source community, but we’re not there yet.

See https://github.com/github/docs/blob/main/contributing/types-of-contributions.md#earth_asia-translations.

Also, for future reference, check out our article on connecting PRs to issues. This helps us to quickly review contributions. ⚡

I've reported this issue internally. Thanks for your passion and interest in improving GitHub docs! 💛