update translations

[iksnae]

we need to update the translations of each non-english version of the book based on the latest version of the english book.

Assess and Plan:

• for each non-english book definition, fetch current chapter contents.
• compare the english with non-english to determine if changes in content require re-translation
• build checklist of translation tasks per file

Execute Plan:

• create branch
• for each translation task, fetch english file, translate, overwrite translated
• create pull request