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

@@ -85,12 +85,12 @@ dataset_info:
           21: B-VP
           22: I-VP
   splits:
-  - name: test
-    num_bytes: 1201151
-    num_examples: 2013
   - name: train
     num_bytes: 5356965
     num_examples: 8937
+  - name: test
+    num_bytes: 1201151
+    num_examples: 2013
   download_size: 3481560
   dataset_size: 6558116
 ---