/usr/share/gtk-doc/ is in libgdict-1.0-dev 3.10.0-1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gtk-doc/html/
/usr/share/gtk-doc/html/gdict/
/usr/share/gtk-doc/html/gdict/GdictClientContext.html
/usr/share/gtk-doc/html/gdict/GdictDatabaseChooser.html
/usr/share/gtk-doc/html/gdict/GdictDefbox.html
/usr/share/gtk-doc/html/gdict/GdictSource.html
/usr/share/gtk-doc/html/gdict/GdictSourceChooser.html
/usr/share/gtk-doc/html/gdict/GdictSourceLoader.html
/usr/share/gtk-doc/html/gdict/GdictSpeller.html
/usr/share/gtk-doc/html/gdict/GdictStrategyChooser.html
/usr/share/gtk-doc/html/gdict/ch05.html
/usr/share/gtk-doc/html/gdict/ch06.html
/usr/share/gtk-doc/html/gdict/context-types.html
/usr/share/gtk-doc/html/gdict/context.html
/usr/share/gtk-doc/html/gdict/gdict-Gdict-Utilities.html
/usr/share/gtk-doc/html/gdict/gdict-Gdict-Version-Checking.html
/usr/share/gtk-doc/html/gdict/gdict-GdictContext.html
/usr/share/gtk-doc/html/gdict/gdict-utils.html
/usr/share/gtk-doc/html/gdict/gdict.devhelp2
/usr/share/gtk-doc/html/gdict/gdict.html
/usr/share/gtk-doc/html/gdict/gdictui.html
/usr/share/gtk-doc/html/gdict/home.png
/usr/share/gtk-doc/html/gdict/index.html
/usr/share/gtk-doc/html/gdict/index.sgml
/usr/share/gtk-doc/html/gdict/introduction.html
/usr/share/gtk-doc/html/gdict/ix01.html
/usr/share/gtk-doc/html/gdict/ix02.html
/usr/share/gtk-doc/html/gdict/ix03.html
/usr/share/gtk-doc/html/gdict/ix04.html
/usr/share/gtk-doc/html/gdict/left.png
/usr/share/gtk-doc/html/gdict/right.png
/usr/share/gtk-doc/html/gdict/sources.html
/usr/share/gtk-doc/html/gdict/style.css
/usr/share/gtk-doc/html/gdict/up.png