/usr/share/doc/libwvstreams4.6-extras/changelog.Debian.gz is in libwvstreams4.6-extras 4.6.1-11.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libwvstreams4.6-extras/../libwvstreams4.6-base/changelog.Debian.gz