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

@@ -39,15 +39,15 @@ dataset_info:
           0: refuted
           1: entailed
   splits:
-  - name: test
-    num_bytes: 13493391
-    num_examples: 12779
   - name: train
     num_bytes: 99852664
     num_examples: 92283
   - name: validation
     num_bytes: 13846872
     num_examples: 12792
+  - name: test
+    num_bytes: 13493391
+    num_examples: 12779
   download_size: 196508436
   dataset_size: 127192927
 - config_name: blind_test