fix README

Author: AtsushiSakai

README.md

@@ -7,6 +7,7 @@ Python codes for robotics algorithm.
 
 
 
+
 # Table of Contents
    * [What is this?](#what-is-this)
    * [Requirements](#requirements)
@@ -69,6 +70,8 @@ Python codes for robotics algorithm.
       * [Linear–quadratic regulator (LQR) steering control](#linearquadratic-regulator-lqr-steering-control)
       * [Linear–quadratic regulator (LQR) speed and steering control](#linearquadratic-regulator-lqr-speed-and-steering-control)
       * [Model predictive speed and steering control](#model-predictive-speed-and-steering-control)
+   * [Arm Navigation](#arm-navigation)
+      * [Two joint arm to point control](#two-joint-arm-to-point-control)
    * [License](#license)
    * [Contribution](#contribution)
    * [Support](#support)
@@ -732,7 +735,7 @@ Ref:
 
 ## Two joint arm to point control
 
-Two josint arm control simulation to a point. 
+Two joint arm to a point control simulation. 
 
 ![3](https://github.com/AtsushiSakai/PythonRobotics/raw/master/ArmNavigation/two_joint_arm_to_point_control/animation.gif)
 
@@ -776,3 +779,4 @@ PayPal donation is also welcome.
 
 
 
+