Minor modifications

README.md

@@ -123,7 +123,8 @@ data = load_dataset("GEM/opusparcus", lang="de")
 
 The above command will download the validation and test sets for
 German. If additionally, you want to retrieve training data, you need
-to specify the level of quality you desire, such as:
+to specify the level of quality you desire, such as "90% quality of
+French":
 
 ```
 data = load_dataset("GEM/opusparcus", lang="fr", quality=90)