modified comments

unity-environment/Assets/ML-Agents/Scripts/Agent.cs

     ///</summary>
     private float reward;
 
-    /// Whether or not the agent is requests an action
+    /// Whether or not the agent requests an action
-    /// Whether or not the agent is requests a decision
+    /// Whether or not the agent requests a decision
     private bool requestDecision;
 
     /// <summary> 
     private int id;
 
     /// <summary>
-    /// Unity method called when the agent is istanciated or set to active.
+	/// Unity method called when the agent is instantiated or set to active.
     /// </summary>
     private void OnEnable()
     {

unity-environment/Assets/ML-Agents/Scripts/Decision.cs

 	* @param state The state of the agent
 	* @param observation The cameras the agent uses
 	* @param reward The reward the agent had at the previous step
-	* @param done Weather or not the agent is done
+	* @param done Whether or not the agent is done
 	* @param memory The memories stored from the previous step with MakeMemory()
 	* @return The vector of actions the agent will take at the next step
 	*/