fixed reset tennis

Project/Assets/ML-Agents/Examples/Tennis/Scripts/HitWall.cs

 
     void Reset()
     {
-        m_AgentA.EndEpisode();
-        m_Area.MatchReset();
+        m_AgentA.EndEpisode();
+        //m_Area.MatchReset();
     }
     
     void AgentAWins()

Project/Assets/ML-Agents/Examples/Tennis/Scripts/TennisAgent.cs

         energyPenalty = 0;
         m_BallTouch = SideChannelUtils.GetSideChannel<FloatPropertiesChannel>().GetPropertyWithDefault("ball_touch", 0);
         m_InvertMult = invertX ? -1f : 1f;
-        if (m_InvertMult == 1f)
-        {
-            m_Area.MatchReset();
-        }
+        if (m_InvertMult == 1f)
+        {
+            m_Area.MatchReset();
+        }
+
     }
 
     public void SetRacket()

config/trainer_config.yaml

     beta: 1.0e-2
     time_horizon: 1000
     self_play:
-        window: 50
+        window: 10
-        swap_steps: 10000
+        swap_steps: 50000
         team_change: 100000
 
 Goalie: