/usr/share/doc/libjpeg-turbo8-dev/changelog.Debian.gz is in libjpeg-turbo8-dev 1.3.0-0ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libjpeg-turbo8-dev/../libjpeg-turbo8/changelog.Debian.gz