proper dataset info

dataset_infos.json

@@ -1,14 +1,14 @@
-dataset_info = {
+{
     "editbench": {
         "splits": {
             "test": {
                 "name": "test",
-                "num_bytes": None,
-                "num_examples": len(dataset),
+                "num_bytes": null,
+                "num_examples": 230,
                 "dataset_name": "editbench"
             }
         },
-        "download_size": None,
-        "dataset_size": None
+        "download_size": null,
+        "dataset_size": null
     }
 }