/usr/share/doc/libjpeg-dev/changelog.Debian.gz is in libjpeg-dev 8c-2ubuntu8.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libjpeg-dev/../libjpeg8/changelog.Debian.gz
/usr/share/doc/libjpeg-dev/../libjpeg8/changelog.Debian.gz