fix path typo

Author: AtsushiSakai

README.md

@@ -160,7 +160,7 @@ Path tracking simulation with rear wheel feedback steering control and PID speed
 
 Path tracking simulation with LQR steering control and PID speed control.
 
-![PythonRobotics/figure_1.png at master · AtsushiSakai/PythonRobotics](https://github.com/AtsushiSakai/PythonRobotics/blob/master/PathTracking/LQR/animation.gif)
+![PythonRobotics/figure_1.png at master · AtsushiSakai/PythonRobotics](https://github.com/AtsushiSakai/PythonRobotics/blob/master/PathTracking/lqr/animation.gif)
 
 
 # License