/usr/share/gtk-doc/ is in libschroedinger-doc 1.0.11-2ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gtk-doc/html/
/usr/share/gtk-doc/html/schroedinger/
/usr/share/gtk-doc/html/schroedinger/home.png
/usr/share/gtk-doc/html/schroedinger/index.html
/usr/share/gtk-doc/html/schroedinger/index.sgml
/usr/share/gtk-doc/html/schroedinger/left.png
/usr/share/gtk-doc/html/schroedinger/right.png
/usr/share/gtk-doc/html/schroedinger/schroedinger-schro.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schroarith.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schroasync.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schrobitstream.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schrobuffer.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schrocuda.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schrodebug.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schrodecoder.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schrodomain.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schroencoder.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schrofft.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schrofilter.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schroframe.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schrohistogram.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schrolimits.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schrolist.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schrometric.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schromotion.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schromotionest.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schrooil.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schropack.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schroparams.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schroqueue.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schrosubband.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schrounpack.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schroutils.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schrovideoformat.html
/usr/share/gtk-doc/html/schroedinger/schroedinger-schrowavelet.html
/usr/share/gtk-doc/html/schroedinger/schroedinger.devhelp2
/usr/share/gtk-doc/html/schroedinger/schrointernal.html
/usr/share/gtk-doc/html/schroedinger/schropublic.html
/usr/share/gtk-doc/html/schroedinger/style.css
/usr/share/gtk-doc/html/schroedinger/up.png