Update config.json

config.json

@@ -33,6 +33,10 @@
     "kv_cache_dtype": {
       "q4f16": "float16",
       "fp16": "float16"
+    },
+    "use_external_data_format": {
+      "model.onnx": true,
+      "model_fp16.onnx": true
     }
   }
 }