Update README.md

README.md

@@ -20,9 +20,12 @@ task_ids:
 configs:
   - config_name: default
     data_files:
-      - math_stackexchange_train.parquet
-      - math_stackexchange_val.parquet
-      - math_stackexchange_test.parquet
+      - split: train
+        path: math_stackexchange_train.parquet
+      - split: validation
+        path: math_stackexchange_val.parquet
+      - split: test
+        path: math_stackexchange_test.parquet
 ---
 
 # Math StackExchange Curated (Parquet, CC BY-SA 4.0)