/usr/share/gtk-doc/html/ is in libedata-cal1.2-dev 3.2.3-0ubuntu7.1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gtk-doc/html/libedata-cal/
/usr/share/gtk-doc/html/libedata-cal/api-index-1.12.html
/usr/share/gtk-doc/html/libedata-cal/api-index-2.22.html
/usr/share/gtk-doc/html/libedata-cal/api-index-2.24.html
/usr/share/gtk-doc/html/libedata-cal/api-index-2.26.html
/usr/share/gtk-doc/html/libedata-cal/api-index-2.28.html
/usr/share/gtk-doc/html/libedata-cal/api-index-2.30.html
/usr/share/gtk-doc/html/libedata-cal/api-index-2.32.html
/usr/share/gtk-doc/html/libedata-cal/api-index-3.0.html
/usr/share/gtk-doc/html/libedata-cal/api-index-3.2.html
/usr/share/gtk-doc/html/libedata-cal/api-index-deprecated.html
/usr/share/gtk-doc/html/libedata-cal/api-index-full.html
/usr/share/gtk-doc/html/libedata-cal/ch01.html
/usr/share/gtk-doc/html/libedata-cal/home.png
/usr/share/gtk-doc/html/libedata-cal/index.html
/usr/share/gtk-doc/html/libedata-cal/index.sgml
/usr/share/gtk-doc/html/libedata-cal/left.png
/usr/share/gtk-doc/html/libedata-cal/libedata-cal-ECalBackend.html
/usr/share/gtk-doc/html/libedata-cal/libedata-cal-ECalBackendCache.html
/usr/share/gtk-doc/html/libedata-cal/libedata-cal-ECalBackendFactory.html
/usr/share/gtk-doc/html/libedata-cal/libedata-cal-ECalBackendFileStore.html
/usr/share/gtk-doc/html/libedata-cal/libedata-cal-ECalBackendSExp.html
/usr/share/gtk-doc/html/libedata-cal/libedata-cal-ECalBackendStore.html
/usr/share/gtk-doc/html/libedata-cal/libedata-cal-ECalBackendSync.html
/usr/share/gtk-doc/html/libedata-cal/libedata-cal-EDataCal.html
/usr/share/gtk-doc/html/libedata-cal/libedata-cal-EDataCalFactory.html
/usr/share/gtk-doc/html/libedata-cal/libedata-cal-EDataCalView.html
/usr/share/gtk-doc/html/libedata-cal/libedata-cal-EIntervalTree.html
/usr/share/gtk-doc/html/libedata-cal/libedata-cal-e-cal-backend-util.html
/usr/share/gtk-doc/html/libedata-cal/libedata-cal.devhelp2
/usr/share/gtk-doc/html/libedata-cal/right.png
/usr/share/gtk-doc/html/libedata-cal/style.css
/usr/share/gtk-doc/html/libedata-cal/up.png