Update dataset_infos.json

dataset_infos.json

@@ -21,7 +21,7 @@
     "download_size": 40719902,
     "dataset_size": 40719902,
     "size_in_bytes": 40719902
-  }
+  },
   "data_files": {
 			"train": [{ "filename": "data/train.parquet" }]
 		}