Reorder split names

Reorder split names in the YAML metadata to be aligned with the order in the loading script.
See: https://github.com/huggingface/datasets/issues/5258

README.md

@@ -38,15 +38,15 @@ dataset_info:
       dtype: int32
   config_name: sberquad
   splits:
-  - name: test
-    num_bytes: 36397848
-    num_examples: 23936
   - name: train
     num_bytes: 71631661
     num_examples: 45328
   - name: validation
     num_bytes: 7972977
     num_examples: 5036
+  - name: test
+    num_bytes: 36397848
+    num_examples: 23936
   download_size: 66047276
   dataset_size: 116002486
 ---