/usr/share/doc/linux-cloud-tools-4.15.0-1023-azure/changelog.Debian.gz is in linux-cloud-tools-4.15.0-1023-azure 4.15.0-1023.24.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/linux-cloud-tools-4.15.0-1023-azure/../linux-azure-cloud-tools-4.15.0-1023/changelog.Debian.gz