[ja] Broken table rendering on "GitHub language support"

Code of Conduct

• I have read and agree to the GitHub Docs project's Code of Conduct

What article on docs.github.com is affected?

https://docs.github.com/ja/get-started/learning-about-github/github-language-support

What changes are you suggesting?

The language support table is displayed as raw Markdown text, including pipe characters and the separator row, instead of a table.

The equivalent English page renders correctly: https://docs.github.com/en/get-started/learning-about-github/github-language-support

Expected behavior: The Japanese page should render the language support matrix as a table.

Additional information

No response