/usr/share/gtk-doc/ is in seed-doc 3.8.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gtk-doc/html/
/usr/share/gtk-doc/html/seed/
/usr/share/gtk-doc/html/seed/GtkBuilder-module.html
/usr/share/gtk-doc/html/seed/Sandbox-module.html
/usr/share/gtk-doc/html/seed/api.html
/usr/share/gtk-doc/html/seed/home.png
/usr/share/gtk-doc/html/seed/index.html
/usr/share/gtk-doc/html/seed/index.sgml
/usr/share/gtk-doc/html/seed/ix01.html
/usr/share/gtk-doc/html/seed/js.html
/usr/share/gtk-doc/html/seed/left.png
/usr/share/gtk-doc/html/seed/modules.html
/usr/share/gtk-doc/html/seed/readline-module.html
/usr/share/gtk-doc/html/seed/right.png
/usr/share/gtk-doc/html/seed/seed-Contexts.html
/usr/share/gtk-doc/html/seed/seed-Evaluation.html
/usr/share/gtk-doc/html/seed/seed-Exceptions.html
/usr/share/gtk-doc/html/seed/seed-Initialization.html
/usr/share/gtk-doc/html/seed/seed-JS-Objects.html
/usr/share/gtk-doc/html/seed/seed-JavaScript-Classes.html
/usr/share/gtk-doc/html/seed/seed-Modules.html
/usr/share/gtk-doc/html/seed/seed-Native-Functions.html
/usr/share/gtk-doc/html/seed/seed-Native-Type-Conversion.html
/usr/share/gtk-doc/html/seed/seed-Operating-on-Native-Types.html
/usr/share/gtk-doc/html/seed/seed-SeedClosure.html
/usr/share/gtk-doc/html/seed/seed-Signals.html
/usr/share/gtk-doc/html/seed/seed-building.html
/usr/share/gtk-doc/html/seed/seed-contact.html
/usr/share/gtk-doc/html/seed/seed-importer.html
/usr/share/gtk-doc/html/seed/seed-introduction.html
/usr/share/gtk-doc/html/seed/seed.devhelp2
/usr/share/gtk-doc/html/seed/seed.html
/usr/share/gtk-doc/html/seed/sqlite-module.html
/usr/share/gtk-doc/html/seed/style.css
/usr/share/gtk-doc/html/seed/types.html
/usr/share/gtk-doc/html/seed/up.png