update default entropy_coef

Author: pan-x-c

trinity/algorithm/entropy_loss_fn/entropy_loss_fn.py

@@ -60,4 +60,4 @@ def __call__(
 
     @classmethod
     def default_args(cls) -> Dict:
-        return {"entropy_coef": 0.001}
+        return {"entropy_coef": 0.0}