fix: split name train -> test

README.md

@@ -487,8 +487,8 @@ configs:
   data_files:
   - split: test
     path: Usos/test-*
-- config_name: cleaned
+- config_name: Cleaned
   data_files:
-  - split: train
-    path: cleaned/train-*
+  - split: test
+    path: cleaned/test-*
 ---