Update translation according to update of the original version

[maaaashin324]

Context

It seems there is a huge gap between the original version and Japanese translation. This repo was updated in 2018 while the original repo is updated in 2020.

What to be implemented

Update the translation

Acceptance Criteria

• Update Japanese translation based on the original repo

[nopara73]

Thanks for bringing this up. I can't claim we had a strategy of figuring out how to update languages we aren't natively speaking. Maybe in the future if someone has an ambition of becoming a technical writer can sort out some thing here (not only regarding the translations) as the content is quite valuable and should be presented in a better, more organized and up to date way.

[maaaashin324]

@nopara73 No worries I'm glad to maintain this documentation. Yeah exactly. For now we can update when we find some gaps between original repo and translations.