elementary: Tweak multibuttonentry docs
elementary: Tweak multibuttonentry docs

Signed-off-by: Mike McCormack <mj.mccormack@samsung.com>

SVN revision: 65568

FlorentRevest/Elementary,tasn/elementary,rvandegrift/elementary,rvandegrift/elementary,tasn/elementary,tasn/elementary,rvandegrift/elementary,tasn/elementary,FlorentRevest/Elementary,FlorentRevest/Elementary,FlorentRevest/Elementary,tasn/elementary,rvandegrift/elementary