Update config.json

config.json

@@ -48,6 +48,7 @@
     "num_hidden_layers": 40
   },
   "auto_map": {
-    "AutoModelForCausalLM": "modeling_chexagent.CheXagentForConditionalGeneration"
+    "AutoModelForCausalLM": "modeling_chexagent.CheXagentForConditionalGeneration",
+    "AutoConfig": "configuration_chexagent.CheXagentConfig"
   }
 }