/usr/share/doc/linux-tools-4.11.0-1016-azure/changelog.Debian.gz is in linux-tools-4.11.0-1016-azure 4.11.0-1016.16.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/linux-tools-4.11.0-1016-azure/../linux-azure-tools-4.11.0-1016/changelog.Debian.gz