Add suffix to Doubel Agent

agents.py

@@ -75,7 +75,7 @@ class DQAgent(QAgent):
     def __init__(self, conf):
         super().__init__(conf)
         self.q2 = QNet(conf)
-        self.name = 'D_' + str(self.name)
+        self.name = str(self.name) + 'DBL'
 
     def get_action(self, state):
         if np.random.rand() <= self.epsilon: