/usr/share/doc/slapd-smbk5pwd/changelog.Debian.gz is in slapd-smbk5pwd 2.4.31-1+nmu2ubuntu8.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/slapd-smbk5pwd/../libldap-2.4-2/changelog.Debian.gz