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

@@ -60,15 +60,15 @@ dataset_info:
           15: I-PER.NOM
           16: O
   splits:
-  - name: test
-    num_bytes: 237407
-    num_examples: 270
   - name: train
     num_bytes: 1179589
     num_examples: 1350
   - name: validation
     num_bytes: 232380
     num_examples: 270
+  - name: test
+    num_bytes: 237407
+    num_examples: 270
   download_size: 750687
   dataset_size: 1649376
 ---