/usr/share/gtk-doc/html/ is in libnemo-extension-dev 3.2.2-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gtk-doc/html/libnemo-extension/
/usr/share/gtk-doc/html/libnemo-extension/ch01.html
/usr/share/gtk-doc/html/libnemo-extension/home.png
/usr/share/gtk-doc/html/libnemo-extension/index.html
/usr/share/gtk-doc/html/libnemo-extension/ix01.html
/usr/share/gtk-doc/html/libnemo-extension/left-insensitive.png
/usr/share/gtk-doc/html/libnemo-extension/left.png
/usr/share/gtk-doc/html/libnemo-extension/libnemo-extension-nemo-column-provider.html
/usr/share/gtk-doc/html/libnemo-extension/libnemo-extension-nemo-column.html
/usr/share/gtk-doc/html/libnemo-extension/libnemo-extension-nemo-extension-types.html
/usr/share/gtk-doc/html/libnemo-extension/libnemo-extension-nemo-file-info.html
/usr/share/gtk-doc/html/libnemo-extension/libnemo-extension-nemo-info-provider.html
/usr/share/gtk-doc/html/libnemo-extension/libnemo-extension-nemo-location-widget-provider.html
/usr/share/gtk-doc/html/libnemo-extension/libnemo-extension-nemo-menu-provider.html
/usr/share/gtk-doc/html/libnemo-extension/libnemo-extension-nemo-menu.html
/usr/share/gtk-doc/html/libnemo-extension/libnemo-extension-nemo-name-and-desc-provider.html
/usr/share/gtk-doc/html/libnemo-extension/libnemo-extension-nemo-property-page-provider.html
/usr/share/gtk-doc/html/libnemo-extension/libnemo-extension-nemo-property-page.html
/usr/share/gtk-doc/html/libnemo-extension/libnemo-extension.devhelp2
/usr/share/gtk-doc/html/libnemo-extension/pt01.html
/usr/share/gtk-doc/html/libnemo-extension/right-insensitive.png
/usr/share/gtk-doc/html/libnemo-extension/right.png
/usr/share/gtk-doc/html/libnemo-extension/style.css
/usr/share/gtk-doc/html/libnemo-extension/up-insensitive.png
/usr/share/gtk-doc/html/libnemo-extension/up.png