When you tap "Help and Feedback" in the config of Wikipedia iOS App,
located inside the top-right gear icon, you always will be redirected to
https://www.mediawiki.org/wiki/Wikimedia_Apps/iOS_FAQ
independent from the preferred language setting.

Preferred behavior:
If the translation for the preferred language of the app, I would like to be redirected
to the translated version.
e.g.) If I set the preferred language as Japanese, I would like to browse
https://www.mediawiki.org/wiki/Wikimedia_Apps/iOS_FAQ/ja