Update README.md

README.md

@@ -153,7 +153,7 @@ It also contains two holdout subsets of 359 identical sentence triplets and 359
 
 - `original`: an original sentence from the source datasets.
 - `simplification`:  a simplification of the original obtained by an automated system or a human.
-- `labels`: a meaning preservation rating between 0 and 100.
+- `label`: a meaning preservation rating between 0 and 100.
 
 ### Data Splits
 The split statistics of CSMD are given below.