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

@@ -37,12 +37,12 @@ dataset_info:
           1: CONTRADICTION
           2: ENTAILMENT
   splits:
-  - name: test
-    num_bytes: 179400
-    num_examples: 1000
   - name: train
     num_bytes: 1381902
     num_examples: 8000
+  - name: test
+    num_bytes: 179400
+    num_examples: 1000
   - name: validation
     num_bytes: 174662
     num_examples: 1000
@@ -59,12 +59,12 @@ dataset_info:
   - name: relatedness_score
     dtype: float32
   splits:
-  - name: test
-    num_bytes: 175400
-    num_examples: 1000
   - name: train
     num_bytes: 1349902
     num_examples: 8000
+  - name: test
+    num_bytes: 175400
+    num_examples: 1000
   - name: validation
     num_bytes: 170662
     num_examples: 1000