Update DiaBLa.py

DiaBLa.py

@@ -88,7 +88,7 @@ class Diabla(datasets.GeneratorBasedBuilder):
                             'final_evaluation_user2': datasets.Value("string"),
                             'scenario': datasets.features.Sequence(
                                 [
-                                  datasets.features.Sequence([datasets.Value("string")])                                                                             
+                                  [datasets.Value("string")]                                                                            
                                 ]
                             ),
                             'user1': datasets.features.Sequence(