/usr/share/gtk-doc/ is in libvte-doc 1:0.28.2-3ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gtk-doc/html/
/usr/share/gtk-doc/html/vte-0.0/
/usr/share/gtk-doc/html/vte-0.0/VteReaper.html
/usr/share/gtk-doc/html/vte-0.0/VteTerminal.html
/usr/share/gtk-doc/html/vte-0.0/VteTerminalAccessible.html
/usr/share/gtk-doc/html/vte-0.0/annotation-glossary.html
/usr/share/gtk-doc/html/vte-0.0/api-index-0-20.html
/usr/share/gtk-doc/html/vte-0.0/api-index-0-24.html
/usr/share/gtk-doc/html/vte-0.0/api-index-0-26.html
/usr/share/gtk-doc/html/vte-0.0/api-index-0-28.html
/usr/share/gtk-doc/html/vte-0.0/api-index-deprecated.html
/usr/share/gtk-doc/html/vte-0.0/api-index-full.html
/usr/share/gtk-doc/html/vte-0.0/ch01.html
/usr/share/gtk-doc/html/vte-0.0/ch02.html
/usr/share/gtk-doc/html/vte-0.0/ch03.html
/usr/share/gtk-doc/html/vte-0.0/deprecated-objects.html
/usr/share/gtk-doc/html/vte-0.0/home.png
/usr/share/gtk-doc/html/vte-0.0/index.html
/usr/share/gtk-doc/html/vte-0.0/index.sgml
/usr/share/gtk-doc/html/vte-0.0/internal-objects.html
/usr/share/gtk-doc/html/vte-0.0/left.png
/usr/share/gtk-doc/html/vte-0.0/licence.html
/usr/share/gtk-doc/html/vte-0.0/object-hierarchy.html
/usr/share/gtk-doc/html/vte-0.0/pt01.html
/usr/share/gtk-doc/html/vte-0.0/right.png
/usr/share/gtk-doc/html/vte-0.0/style.css
/usr/share/gtk-doc/html/vte-0.0/up.png
/usr/share/gtk-doc/html/vte-0.0/vte-0.0.devhelp
/usr/share/gtk-doc/html/vte-0.0/vte-0.0.devhelp2
/usr/share/gtk-doc/html/vte-0.0/vte-Version-Information.html
/usr/share/gtk-doc/html/vte-0.0/vte-Vte-PTY.html