This file is indexed.

/usr/share/help/fr/gnome-user-share/index.docbook is in gnome-user-share 3.14.2-2ubuntu4.

This file is owned by root:root, with mode 0o777.

It is a symlink to /usr/share/help/fr/gnome-user-share/../../../help-langpack/fr/gnome-user-share/index.docbook