Update README.md

Add correct evaluation rewards

README.md

@@ -583,22 +583,22 @@ The PPO RL agent was trained for 50M steps on each environment and obtained the
 
 | Environment | Return |
 |:------------|:-------|
-| bigfish     | 32.77  |
-| bossfight   | 12.49  |
-| caveflyer   | xx.xx  |
-| chaser      | xx.xx  |
-| climber     | xx.xx  |
-| coinrun     | xx.xx  |
-| dodgeball   | xx.xx  |
-| fruitbot    | xx.xx  |
-| heist       | xx.xx  |
-| jumper      | xx.xx  |
-| leaper      | xx.xx  |
-| maze        | xx.xx  |
-| miner       | xx.xx  |
-| ninja       | xx.xx  |
-| plunder     | xx.xx  |
-| starpilot   | xx.xx  |
+| bigfish     | 29.16  |
+| bossfight   | 11.35  |
+| caveflyer   | 09.47  |
+| chaser      | 11.46  |
+| climber     | 11.17  |
+| coinrun     | 09.74  |
+| dodgeball   | 16.78  |
+| fruitbot    | 29.87  |
+| heist       | 09.98  |
+| jumper      | 08.71  |
+| leaper      | 07.71  |
+| maze        | 09.99  |
+| miner       | 12.63  |
+| ninja       | 09.44  |
+| plunder     | 25.98  |
+| starpilot   | 55.28  |
 
 
 ## Dataset Structure