Fix RigidBody's configuration warning for Z axis

scene/3d/physics_body.cpp

@@ -781,7 +781,7 @@ String RigidBody::get_configuration_warning() const {
 
 	String warning = CollisionObject::get_configuration_warning();
 
-	if ((get_mode() == MODE_RIGID || get_mode() == MODE_CHARACTER) && (ABS(t.basis.get_axis(0).length() - 1.0) > 0.05 || ABS(t.basis.get_axis(1).length() - 1.0) > 0.05 || ABS(t.basis.get_axis(0).length() - 1.0) > 0.05)) {
+	if ((get_mode() == MODE_RIGID || get_mode() == MODE_CHARACTER) && (ABS(t.basis.get_axis(0).length() - 1.0) > 0.05 || ABS(t.basis.get_axis(1).length() - 1.0) > 0.05 || ABS(t.basis.get_axis(2).length() - 1.0) > 0.05)) {
 		if (warning != String()) {
 			warning += "\n";
 		}