removed error from config file

config.json

@@ -13,7 +13,7 @@
     "0": "DIRECT",
     "1": "JUDGEMENTAL",
     "2": "REPORTED",
-    "3": "UNKNOWN",
+    "3": "UNKNOWN"
   },
   "initializer_range": 0.02,
   "intermediate_size": 3072,
@@ -21,7 +21,7 @@
     "DIRECT": 0,
     "JUDGEMENTAL": 1,
     "REPORTED": 2,
-    "UNKNOWN": 3,
+    "UNKNOWN": 3
   },
   "layer_norm_eps": 1e-12,
   "max_position_embeddings": 512,