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

@@ -31,12 +31,12 @@ dataset_info:
           0: '0'
           1: '1'
   splits:
-  - name: test
-    num_bytes: 109681
-    num_examples: 1000
   - name: train
     num_bytes: 1104322
     num_examples: 10041
+  - name: test
+    num_bytes: 109681
+    num_examples: 1000
   download_size: 410001
   dataset_size: 1214003
 - config_name: task02
@@ -51,12 +51,12 @@ dataset_info:
           1: '1'
           2: '2'
   splits:
-  - name: test
-    num_bytes: 109681
-    num_examples: 1000
   - name: train
     num_bytes: 1104322
     num_examples: 10041
+  - name: test
+    num_bytes: 109681
+    num_examples: 1000
   download_size: 410147
   dataset_size: 1214003
 ---