/usr/share/doc/libwnck-dev/NEWS.gz is in libwnck-dev 1:2.30.7-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libwnck-dev/../libwnck22/NEWS.gz
/usr/share/doc/libwnck-dev/../libwnck22/NEWS.gz