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

@@ -171,15 +171,15 @@ dataset_info:
     - name: query
       dtype: int32
   splits:
-  - name: test
-    num_bytes: 17200575
-    num_examples: 10000
   - name: train
     num_bytes: 179232052
     num_examples: 100730
   - name: validation
     num_bytes: 17479084
     num_examples: 10000
+  - name: test
+    num_bytes: 17200575
+    num_examples: 10000
   download_size: 51757880
   dataset_size: 213911711
 - config_name: rte