/usr/share/doc/libapache2-mod-webauthldap/changelog.Debian.gz is in libapache2-mod-webauthldap 4.5.5-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libapache2-mod-webauthldap/../libwebauth10/changelog.Debian.gz