Update dataset_infos.json

dataset_infos.json

@@ -32,13 +32,13 @@
     "splits": {
       "train": {
         "name": "train",
-        "MB": 20.4,
+        "num_bytes": 20400000,
         "num_examples": 900,
         "dataset_name": "pets"
       },
       "test": {
         "name": "validation",
-        "MB": 3.29,
+        "num_bytes": 3290000,
         "num_examples": 150,
         "dataset_name": "pets"
       }