changed ml agents to ml-agents

python/learn.py

-# # Unity ML Agents
+# # Unity ML-Agents
 # ## ML-Agent Learning
 
 import logging

python/unitytrainers/bc/trainer.py

-# # Unity ML Agents
+# # Unity ML-Agents
 # ## ML-Agent Learning (Imitation)
 # Contains an implementation of Behavioral Cloning Algorithm
 

python/unitytrainers/ppo/trainer.py

-# # Unity ML Agents
+# # Unity ML-Agents
 # ## ML-Agent Learning (PPO)
 # Contains an implementation of PPO as described (https://arxiv.org/abs/1707.06347).
 

python/unitytrainers/trainer.py

-# # Unity ML Agents
+# # Unity ML-Agents
 import logging
 
 import tensorflow as tf

python/unitytrainers/trainer_controller.py

-# # Unity ML Agents
+# # Unity ML-Agents
 # ## ML-Agent Learning
 # Launches unitytrainers for each External Brains in a Unity Environment