Update README.md

README.md

@@ -29,4 +29,5 @@ dataset_info:
 ---
 # Dataset Card for "nkiwi"
 
-[More Information needed](https://github.com/huggingface/datasets/blob/main/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
+`train` : Original texts + Hard-negative texts(BM25)
+`validation` : Original x2