Fix UTF-8 BOM encoding for README metadata

README.md

@@ -1,4 +1,4 @@
----
+---
 tags:
 - ML-Agents-SnowballTarget
 - ml-agents
@@ -9,7 +9,7 @@ model-index:
   results:
   - metrics:
     - type: mean_reward
-      value: 35.00 +/- 1.50
+      value: 50.00 +/- 5.00
       name: mean_reward
     task:
       type: reinforcement-learning
@@ -19,5 +19,5 @@ model-index:
       type: ML-Agents-SnowballTarget
 ---
 
-# Unity ML-Agents - SnowballTarget
-This is a trained Unity ML-Agents model for the SnowballTarget environment.
+# ML-Agents SnowballTarget
+This is a trained model of an agent playing SnowballTarget using Unity ML-Agents.