/usr/share/doc/libgwrap-runtime-dev/THANKS is in libgwrap-runtime-dev 1.9.14-2ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libgwrap-runtime-dev/../libgwrap-runtime2/THANKS
/usr/share/doc/libgwrap-runtime-dev/../libgwrap-runtime2/THANKS