properly specify metadata in KB function

scene/2d/physics_body_2d.cpp

@@ -1250,7 +1250,7 @@ void KinematicBody2D::_bind_methods() {
 	ObjectTypeDB::bind_method(_MD("get_collider_velocity"),&KinematicBody2D::get_collider_velocity);
 	ObjectTypeDB::bind_method(_MD("get_collider:Object"),&KinematicBody2D::_get_collider);
 	ObjectTypeDB::bind_method(_MD("get_collider_shape"),&KinematicBody2D::get_collider_shape);
-	ObjectTypeDB::bind_method(_MD("get_collider_metadata"),&KinematicBody2D::get_collider_metadata);
+	ObjectTypeDB::bind_method(_MD("get_collider_metadata:Variant"),&KinematicBody2D::get_collider_metadata);
 
 	ObjectTypeDB::bind_method(_MD("set_collision_margin","pixels"),&KinematicBody2D::set_collision_margin);
 	ObjectTypeDB::bind_method(_MD("get_collision_margin","pixels"),&KinematicBody2D::get_collision_margin);