Addressing #3292 Documentation changes (#3295)

docs/Basic-Guide.md

 
    ![Platform Prefab](images/platform_prefab.png)
 
-3. In the **Project** window, drag the **3DBallLearning** Model located in
-   `Assets/ML-Agents/Examples/3DBall/TFModels` into the `Model` property under `Ball 3D Agent (Script)` component in the **Inspector** window.
+3. In the **Project** window, drag the **3DBall** Model located in
+   `Assets/ML-Agents/Examples/3DBall/TFModels` into the `Model` property under `Behavior Parameters (Script)` component in the Agent GameObject **Inspector** window.
-4. You should notice that each `Agent` under each `3DBall` in the **Hierarchy** windows now contains **3DBallLearning** as `Model`. __Note__ : You can modify multiple game objects in a scene by selecting them all at
+4. You should notice that each `Agent` under each `3DBall` in the **Hierarchy** windows now contains **3DBall** as `Model` on the `Behavior Parameters`. __Note__ : You can modify multiple game objects in a scene by selecting them all at
    once using the search bar in the Scene Hierarchy.
 8. Select the **InferenceDevice** to use for this model (CPU or GPU) on the Agent.
    _Note: CPU is faster for the majority of ML-Agents toolkit generated models_