Update dataset.yaml

dataset.yaml

@@ -9,8 +9,13 @@ dataset_info:
       pattern: metadata_train.csv
     - name: validation
       pattern: metadata_val.csv
+
 builder:
   name: csv
+
 config:
+  data_files:
+    train: metadata_train.csv
+    validation: metadata_val.csv
   audio:
     column: file_name