/usr/share/doc/cloudkitty-api/changelog.Debian.gz is in cloudkitty-api 7.0.0-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/cloudkitty-api/../cloudkitty-common/changelog.Debian.gz
/usr/share/doc/cloudkitty-api/../cloudkitty-common/changelog.Debian.gz