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

@@ -154,15 +154,15 @@ dataset_info:
         sequence: int32
         length: 3
   splits:
-  - name: test
-    num_bytes: 14709044
-    num_examples: 222
   - name: train
     num_bytes: 112246121
     num_examples: 1940
   - name: validation
     num_bytes: 14116925
     num_examples: 222
+  - name: test
+    num_bytes: 14709044
+    num_examples: 222
   download_size: 193644139
   dataset_size: 141072090
 - config_name: chinese_v4
@@ -277,15 +277,15 @@ dataset_info:
         sequence: int32
         length: 3
   splits:
-  - name: test
-    num_bytes: 9585138
-    num_examples: 166
   - name: train
     num_bytes: 77195698
     num_examples: 1391
   - name: validation
     num_bytes: 10828169
     num_examples: 172
+  - name: test
+    num_bytes: 9585138
+    num_examples: 166
   download_size: 193644139
   dataset_size: 97609005
 - config_name: arabic_v4
@@ -362,15 +362,15 @@ dataset_info:
         sequence: int32
         length: 3
   splits:
-  - name: test
-    num_bytes: 4900664
-    num_examples: 44
   - name: train
     num_bytes: 42017761
     num_examples: 359
   - name: validation
     num_bytes: 4859292
     num_examples: 44
+  - name: test
+    num_bytes: 4900664
+    num_examples: 44
   download_size: 193644139
   dataset_size: 51777717
 - config_name: english_v12
@@ -500,15 +500,15 @@ dataset_info:
         sequence: int32
         length: 3
   splits:
-  - name: test
-    num_bytes: 18254144
-    num_examples: 1200
   - name: train
     num_bytes: 174173192
     num_examples: 10539
   - name: validation
     num_bytes: 24264804
     num_examples: 1370
+  - name: test
+    num_bytes: 18254144
+    num_examples: 1200
   download_size: 193644139
   dataset_size: 216692140
 ---