Update config.json

config.json

@@ -4,6 +4,6 @@
   ],
   "model_type": "efficientnet",
   "num_labels": 4,
-  "id2label": {0: 0, 1: 1, 2: 2, 3: 3},
-  "label2id": {0: 0, 1: 1, 2: 2, 3: 3}
-}
+  "id2label": {"0": 0, "1": 1, "2": 2, "3": 3},
+  "label2id": {"0": 0, "1": 1, "2": 2, "3": 3}
+}