/usr/share/help-langpack/pl/cheese/ is in language-pack-gnome-pl-base 1:18.04+20180423.
This file is owned by root:root, with mode 0o755.
..
/usr/share/help-langpack/pl/cheese/burst-mode.page
/usr/share/help-langpack/pl/cheese/effects-apply.page
/usr/share/help-langpack/pl/cheese/index.page
/usr/share/help-langpack/pl/cheese/introduction.page
/usr/share/help-langpack/pl/cheese/legal.xml
/usr/share/help-langpack/pl/cheese/photo-delete.page
/usr/share/help-langpack/pl/cheese/photo-save.page
/usr/share/help-langpack/pl/cheese/photo-take.page
/usr/share/help-langpack/pl/cheese/photo-view.page
/usr/share/help-langpack/pl/cheese/pref-countdown.page
/usr/share/help-langpack/pl/cheese/pref-flash.page
/usr/share/help-langpack/pl/cheese/pref-fullscreen.page
/usr/share/help-langpack/pl/cheese/pref-image-properties.page
/usr/share/help-langpack/pl/cheese/pref-resolution.page
/usr/share/help-langpack/pl/cheese/video-record.page