/usr/share/doc/libreoffice-help-el/changelog.Debian.gz is in libreoffice-help-el 1:5.1.4-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libreoffice-help-el/../libreoffice-l10n-el/changelog.Debian.gz