Updated the editor build setting

Project/ProjectSettings/EditorBuildSettings.asset

   serializedVersion: 2
   m_Scenes:
   - enabled: 1
-    path: Assets/ML-Agents/Examples/3DBall/Scenes/3DBallHard.unity
-    guid: 35c41099ceec44889bdbe95ed86c97ac
+    path: Assets/ML-Agents/Examples/WallJump/Scenes/WallJump.unity
+    guid: 56024e8d040d344709949bc88128944d
   m_configObjects: {}