/usr/share/help/sv/shotwell/index.page is in shotwell-common 0.28.2-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/help/sv/shotwell/../../../help-langpack/sv/shotwell/index.page
/usr/share/help/sv/shotwell/../../../help-langpack/sv/shotwell/index.page