Update README.md

README.md

@@ -75,7 +75,7 @@ It achieves the following results on the evaluation set:
 ## Model description
 
 This model is for reference-free, long-context quality estimation (QE) of machine translation (MT) systems.
-It is trained on a dataset of texts of up to 32 sentences (64 sentences for the source and target).
+It is trained on a dataset of translation pairs comprising up to 32 sentences (64 sentences for the source and target).
 Hence, this model is suitable for document-level quality estimation.
 
 ## Training and evaluation data