/usr/share/help/ro/gedit/gedit-plugins-insert-date-time.page is in gedit-common 3.18.3-0ubuntu4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/help/ro/gedit/../../../help-langpack/ro/gedit/gedit-plugins-insert-date-time.page