/usr/share/man/man3/ggDelObserver.3.gz is in libgii1 1:1.0.2-4ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man3/ggAddObserver.3.gz
/usr/share/man/man3/ggAddObserver.3.gz