/usr/share/doc/linux-cloud-tools-4.4.0-53-lowlatency/changelog.Debian.gz is in linux-cloud-tools-4.4.0-53-lowlatency 4.4.0-53.74.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/linux-cloud-tools-4.4.0-53-lowlatency/../linux-cloud-tools-4.4.0-53/changelog.Debian.gz