Update Getting-Started-with-Balance-Ball.md

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

 Once the training process completes, and the training process saves the model 
 (denoted by the `Saved Model` message) you can add it to the Unity project and 
 use it with agents having an **Internal** brain type.
-**Note** You shouldn't just close the unity window once the `Saved Model` message appears. Press Ctrl+C in the Anaconda prompt, and this will formally end the triaing session and export the .byted file. Otherwise,, the byte file will neevr be exported into the ml-agents folder.
+**Note** You shouldn't just close the unity Window once the `Saved Model` message appears. Press Ctrl+C in the Anaconda prompt, and this will formally end the triaing session and export the .byted file. Otherwise, the .bytes file will never be exported into the ml-agents folder.
 
 ### Setting up TensorFlowSharp Support