/usr/share/doc/libssh-gcrypt-dev/changelog.Debian.gz is in libssh-gcrypt-dev 0.6.3-4.3ubuntu0.2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libssh-gcrypt-dev/../libssh-gcrypt-4/changelog.Debian.gz