/usr/share/doc/linux-tools-4.15.0-32-lowlatency/changelog.Debian.gz is in linux-tools-4.15.0-32-lowlatency 4.15.0-32.35.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/linux-tools-4.15.0-32-lowlatency/../linux-tools-4.15.0-32/changelog.Debian.gz