/usr/share/gtk-doc/ is in libprelude-doc 4.1.0-4.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gtk-doc/html/
/usr/share/gtk-doc/html/libprelude/
/usr/share/gtk-doc/html/libprelude/api-index-full.html
/usr/share/gtk-doc/html/libprelude/ch01.html
/usr/share/gtk-doc/html/libprelude/deprecated-api-index.html
/usr/share/gtk-doc/html/libprelude/home.png
/usr/share/gtk-doc/html/libprelude/index.html
/usr/share/gtk-doc/html/libprelude/left-insensitive.png
/usr/share/gtk-doc/html/libprelude/left.png
/usr/share/gtk-doc/html/libprelude/libprelude-idmef-additional-data.html
/usr/share/gtk-doc/html/libprelude/libprelude-idmef-criteria.html
/usr/share/gtk-doc/html/libprelude/libprelude-idmef-criterion-value.html
/usr/share/gtk-doc/html/libprelude/libprelude-idmef-data.html
/usr/share/gtk-doc/html/libprelude/libprelude-idmef-message-print.html
/usr/share/gtk-doc/html/libprelude/libprelude-idmef-message-read.html
/usr/share/gtk-doc/html/libprelude/libprelude-idmef-message-write.html
/usr/share/gtk-doc/html/libprelude/libprelude-idmef-path.html
/usr/share/gtk-doc/html/libprelude/libprelude-idmef-time.html
/usr/share/gtk-doc/html/libprelude/libprelude-idmef-tree-wrap.html
/usr/share/gtk-doc/html/libprelude/libprelude-idmef-value.html
/usr/share/gtk-doc/html/libprelude/libprelude-prelude-async.html
/usr/share/gtk-doc/html/libprelude/libprelude-prelude-client-profile.html
/usr/share/gtk-doc/html/libprelude/libprelude-prelude-client.html
/usr/share/gtk-doc/html/libprelude/libprelude-prelude-connection-pool.html
/usr/share/gtk-doc/html/libprelude/libprelude-prelude-connection.html
/usr/share/gtk-doc/html/libprelude/libprelude-prelude-error.html
/usr/share/gtk-doc/html/libprelude/libprelude-prelude-failover.html
/usr/share/gtk-doc/html/libprelude/libprelude-prelude-hash.html
/usr/share/gtk-doc/html/libprelude/libprelude-prelude-ident.html
/usr/share/gtk-doc/html/libprelude/libprelude-prelude-inttypes.html
/usr/share/gtk-doc/html/libprelude/libprelude-prelude-io.html
/usr/share/gtk-doc/html/libprelude/libprelude-prelude-linked-object.html
/usr/share/gtk-doc/html/libprelude/libprelude-prelude-list.html
/usr/share/gtk-doc/html/libprelude/libprelude-prelude-log.html
/usr/share/gtk-doc/html/libprelude/libprelude-prelude-msg.html
/usr/share/gtk-doc/html/libprelude/libprelude-prelude-msgbuf.html
/usr/share/gtk-doc/html/libprelude/libprelude-prelude-option-wide.html
/usr/share/gtk-doc/html/libprelude/libprelude-prelude-option.html
/usr/share/gtk-doc/html/libprelude/libprelude-prelude-plugin.html
/usr/share/gtk-doc/html/libprelude/libprelude-prelude-string.html
/usr/share/gtk-doc/html/libprelude/libprelude-prelude-timer.html
/usr/share/gtk-doc/html/libprelude/libprelude-prelude.html
/usr/share/gtk-doc/html/libprelude/libprelude.devhelp2
/usr/share/gtk-doc/html/libprelude/object-tree.html
/usr/share/gtk-doc/html/libprelude/right-insensitive.png
/usr/share/gtk-doc/html/libprelude/right.png
/usr/share/gtk-doc/html/libprelude/style.css
/usr/share/gtk-doc/html/libprelude/up-insensitive.png
/usr/share/gtk-doc/html/libprelude/up.png