/usr/share/doc/libqca2-dev/changelog.Debian.gz is in libqca2-dev 2.1.1-2ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libqca2-dev/../libqca2/changelog.Debian.gz
/usr/share/doc/libqca2-dev/../libqca2/changelog.Debian.gz