/usr/share/gtk-doc/html/ is in libgrits-doc 0.8.1-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gtk-doc/html/grits/
/usr/share/gtk-doc/html/grits/GritsCallback.html
/usr/share/gtk-doc/html/grits/GritsMarker.html
/usr/share/gtk-doc/html/grits/GritsObject.html
/usr/share/gtk-doc/html/grits/GritsOpenGL.html
/usr/share/gtk-doc/html/grits/GritsPluginElev.html
/usr/share/gtk-doc/html/grits/GritsPluginEnv.html
/usr/share/gtk-doc/html/grits/GritsPluginMap.html
/usr/share/gtk-doc/html/grits/GritsPluginSat.html
/usr/share/gtk-doc/html/grits/GritsPluginTest.html
/usr/share/gtk-doc/html/grits/GritsPrefs.html
/usr/share/gtk-doc/html/grits/GritsTile.html
/usr/share/gtk-doc/html/grits/GritsViewer.html
/usr/share/gtk-doc/html/grits/ch01.html
/usr/share/gtk-doc/html/grits/ch02.html
/usr/share/gtk-doc/html/grits/ch03.html
/usr/share/gtk-doc/html/grits/ch04.html
/usr/share/gtk-doc/html/grits/ch05.html
/usr/share/gtk-doc/html/grits/ch06.html
/usr/share/gtk-doc/html/grits/grits-GritsPlugin.html
/usr/share/gtk-doc/html/grits/grits-demo.html
/usr/share/gtk-doc/html/grits/grits-gpqueue.html
/usr/share/gtk-doc/html/grits/grits-grits-data.html
/usr/share/gtk-doc/html/grits/grits-grits-http.html
/usr/share/gtk-doc/html/grits/grits-grits-util.html
/usr/share/gtk-doc/html/grits/grits-grits-wms.html
/usr/share/gtk-doc/html/grits/grits-roam.html
/usr/share/gtk-doc/html/grits/grits.devhelp2
/usr/share/gtk-doc/html/grits/home.png
/usr/share/gtk-doc/html/grits/index.html
/usr/share/gtk-doc/html/grits/index.sgml
/usr/share/gtk-doc/html/grits/ix01.html
/usr/share/gtk-doc/html/grits/left.png
/usr/share/gtk-doc/html/grits/right.png
/usr/share/gtk-doc/html/grits/style.css
/usr/share/gtk-doc/html/grits/up.png