fix: rotate tail rotor on x-axis instead of y-axis to match rigth axis

src/main.rs

@@ -443,7 +443,7 @@ fn main() {
                     let mut mr_pin = main_rotor_node.as_mut();
                     unsafe { mr_pin.get_unchecked_mut().rotation.y = elapsed * 10.0; }
                     let mut tr_pin = tail_rotor_node.as_mut();
-                    unsafe { tr_pin.get_unchecked_mut().rotation.y = elapsed * 10.0; }
+                    unsafe { tr_pin.get_unchecked_mut().rotation.x = elapsed * 10.0; }
                 }
 
                 // Draw scene via scene graph