/usr/share/doc/libgsettings-qt-dev/changelog.Debian.gz is in libgsettings-qt-dev 0.1+16.04.20160329-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libgsettings-qt-dev/../libgsettings-qt1/changelog.Debian.gz