Release 0.14.0 more doc fixes (#3388)

* Update Learning-Environment-Create-New.md (#3356)

* Update Learning-Environment-Create-New.md

In the "Final Editor Setup" , I think their should be a Step to add Decision Parameters Script and it says Decision Period from 1 to 20.
Without this their was no action taken by the RolerAgent. After adding this step it worked for me.

* Update docs/Learning-Environment-Create-New.md

Co-Authored-By: Chris Elion <celion@gmail.com>

* Update docs/Learning-Environment-Create-New.md

Co-Authored-By: Chris Elion <celion@gmail.com>

Co-authored-by: Chris Elion <celion@gmail.com>

* migration fixes

Co-authored-by: Medhavi Monish <39962268+MedhaviMonish@users.noreply.github.com>

docs/Learning-Environment-Create-New.md

 
 1. Select the **RollerAgent** GameObject to show its properties in the Inspector
     window.
-2. Change **Decision Interval** from `1` to `10`.
-3. Drag the Target GameObject from the Hierarchy window to the RollerAgent
+2. Add the Decision Requester script with the Add Component button from the RollerAgent Inspector.
+3. Change **Decision Period** to `10`.
+4. Drag the Target GameObject from the Hierarchy window to the RollerAgent
-4. Add the Behavior Parameters script with the Add Component button from the RollerAgent Inspector.
-5. Modify the Behavior Parameters of the Agent :
+5. Add the Behavior Parameters script with the Add Component button from the RollerAgent Inspector.
+6. Modify the Behavior Parameters of the Agent :
   * `Behavior Name` to *RollerBallBrain*
   * `Vector Observation` `Space Size` = 8
   * `Vector Action` `Space Type` = **Continuous**
 
 * If you are using multiple training areas, make sure all the Agents have the same `Behavior Name`
 and `Behavior Parameters`
-
-

docs/Migrating.md

 * If you were not using `On Demand Decision` for your Agent, you **must** add a `DecisionRequester` component to your Agent GameObject and set its `Decision Period` field to the old `Decision Period` of the Agent.
 * If you have a class that inherits from Academy:
   * If the class didn't override any of the virtual methods and didn't store any additional data, you can just remove the old script from the scene.
-  * If the class had additional data, create a new MonoBehaviour and store the data on this instead.
+  * If the class had additional data, create a new MonoBehaviour and store the data in the new MonoBehaviour instead.
   * If the class overrode the virtual methods, create a new MonoBehaviour and move the logic to it:
     * Move the InitializeAcademy code to MonoBehaviour.OnAwake
     * Move the AcademyStep code to MonoBehaviour.FixedUpdate
 * Text actions and observations, and custom action and observation protos have been removed.
 * RayPerception3D and RayPerception2D are marked deprecated, and will be removed in a future release. They can be replaced by RayPerceptionSensorComponent3D and RayPerceptionSensorComponent2D.
 * The `Use Heuristic` checkbox in Behavior Parameters has been replaced with a `Behavior Type` dropdown menu. This has the following options:
-  * `Default` corresponds to the previous unchecked behavior, meaning that Agents will train if they connect to a python trainer, otherwise they will performance inference.
+  * `Default` corresponds to the previous unchecked behavior, meaning that Agents will train if they connect to a python trainer, otherwise they will perform inference.
   * `Heuristic Only` means the Agent will always use the `Heuristic()` method. This corresponds to having "Use Heuristic" selected in 0.11.0.
   * `Inference Only` means the Agent will always perform inference.
 * Barracuda was upgraded to 0.3.2, and it is now installed via the Unity Package Manager.