Phira-docs Instruction

This is the instruction of Phira-related documentation, visit GitHub to submit feedbacks or contribute, read in other language by editing the url, for example /en/

If you’re willing to provide translation, please refer to

• Instructions in mdbook-i18n-helpers
• Examples in comprehensive-rust

Provide the translated .po file in the Pull Request, and add the corresponding language code in LANGUAGES in env in the .github/mdbook.yml file, visit ISO 639 for language code reference