/usr/share/doc/wesnoth-1.10-core is in wesnoth-1.10-core 1:1.10.3-3+deb7u2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/wesnoth-1.10-data
/usr/share/doc/wesnoth-1.10-data