/usr/share/doc/libavahi-compat-libdnssd1/NEWS.gz is in libavahi-compat-libdnssd1 0.6.30-5ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libavahi-compat-libdnssd1/../libavahi-common-data/NEWS.gz