/usr/share/gtk-doc/html/grilo is in libgrilo-0.2-doc 0.2.15-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/gtk-doc/html/../../doc/libgrilo-0.2-doc/html/grilo
/usr/share/gtk-doc/html/../../doc/libgrilo-0.2-doc/html/grilo