change feature defs

musique.py

@@ -73,10 +73,8 @@ class musique(evaluate.Metric):
             # This defines the format of each prediction and reference
             features=datasets.Features(
                 {
-                    "predictions": datasets.features.Sequence(datasets.Value("string")),
-                    "references": datasets.features.Sequence(
-                        datasets.features.Sequence(datasets.Value("string"))
-                    ),
+                    "predictions": datasets.Value("string"),
+                    "references": datasets.features.Sequence(datasets.Value("string")),
                 }
             ),
             # Homepage of the module for documentation