/usr/share/doc/libgtk-sharp-beans2.0-cil-dev/changelog.Debian.gz is in libgtk-sharp-beans2.0-cil-dev 2.14.1-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libgtk-sharp-beans2.0-cil-dev/../libgtk-sharp-beans-cil/changelog.Debian.gz