/usr/share/help/oc/totem/index.docbook is in totem-common 3.26.0-0ubuntu6.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/help/oc/totem/../../../help-langpack/oc/totem/index.docbook
/usr/share/help/oc/totem/../../../help-langpack/oc/totem/index.docbook