Update prefab

Project/Assets/ML-Agents/Examples/WallJump/Prefabs/WallJumpCollabArea.prefab

   m_BrainParameters:
     VectorObservationSize: 4
     NumStackedVectorObservations: 6
+    m_ActionSpec:
+      m_NumContinuousActions: 0
+      BranchSizes: 03000000030000000300000002000000
+    hasUpgradedBrainParametersWithActionSpec: 1
   m_Model: {fileID: 11400000, guid: 25b8e2fb1a49e4e298368f50b14489e4, type: 3}
   m_InferenceDevice: 0
   m_BehaviorType: 0
   m_BrainParameters:
     VectorObservationSize: 4
     NumStackedVectorObservations: 6
+    m_ActionSpec:
+      m_NumContinuousActions: 0
+      BranchSizes: 03000000030000000300000002000000
+    hasUpgradedBrainParametersWithActionSpec: 1
   m_Model: {fileID: 11400000, guid: 25b8e2fb1a49e4e298368f50b14489e4, type: 3}
   m_InferenceDevice: 0
   m_BehaviorType: 0
   m_BrainParameters:
     VectorObservationSize: 4
     NumStackedVectorObservations: 6
+    m_ActionSpec:
+      m_NumContinuousActions: 0
+      BranchSizes: 03000000030000000300000002000000
+    hasUpgradedBrainParametersWithActionSpec: 1
   m_Model: {fileID: 11400000, guid: 25b8e2fb1a49e4e298368f50b14489e4, type: 3}
   m_InferenceDevice: 0
   m_BehaviorType: 0