Update README.md

README.md

@@ -5,6 +5,6 @@ that learn from the environment based on a defined cost function.
 
 #### Upcoming objectives
 1. Verify again that sweep interpolation data provides reasonable estimates of real-world forces and torques using load cell
-2. Implement PID controller that interfaces with the simulation environment present in ```lev_env.py```
+2. Implement PID controller that interfaces with the simulation environment present in ```lev_pod_env.py```
 3. Implement other forms of reinforcement learning control, look into designing a reward structure that is conducive to learning, and
 overall dive into more research on reinforcement learning algorithms for very sensitive tasks that are intrinsically highly unstable.