clean up

docs/Getting-Started-with-Balance-Ball.md

 Brain, but would act independently. The Brain settings tell you quite a bit about how
 an Agent works.
 
-You can create Brain objects by selecting `Assets -> 
+You can create new Brain assets by selecting `Assets -> 
 Create -> ML-Agents -> Brain`. There are 3 kinds of Brains. 
 The **Learning Brain** is a Brain that uses a trained neural network to take decisions.
 When the `Control` box is checked in the Brains property under the **Broadcast Hub** in the Academy is checked as `Control`, the external process will be take over making decisions for the agents