/usr/share/doc/libgtkspell3-3-dev/changelog.Debian.gz is in libgtkspell3-3-dev 3.0.4-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libgtkspell3-3-dev/../libgtkspell3-3-0/changelog.Debian.gz