Added Japanese Translations for Command Descriptions #166

[NickCwh]

Description

Added Japanese Translations for Command Descriptions #166, following the stated convention of je: string

Fixes #166

Required checklist:

• [ ] My code matches the existing code style of this project.
• One of these:
  • [ ] This is a new localization for existing content.
  • [ ] This is new content that is localized for all the locales that this project currently supports.
  • [ ] I described above how I plan to localize this content immediately after merging these changes.
  • [ ] Localization is not applicable to this change.
• [ ] I have tested my code and it successfully builds for GitHub Pages and validates as AMP.