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

@@ -41,12 +41,12 @@ dataset_info:
   - name: paraphrased_question
     dtype: string
   splits:
-  - name: test
-    num_bytes: 4067092
-    num_examples: 4781
   - name: train
     num_bytes: 16637751
     num_examples: 19293
+  - name: test
+    num_bytes: 4067092
+    num_examples: 4781
   download_size: 3959901
   dataset_size: 20704843
 ---