Update README.md

README.md

@@ -21,9 +21,12 @@ metadata:
   configs:
   - config_name: default
     data_files:
-      train: data/train/*.wav
-      validation: data/validation/*.wav
-      test: data/test/*.wav
+      train:
+        - data/train/*.wav
+      validation:
+        - data/validation/*.wav
+      test:
+        - data/test/*.wav
     features:
       - name: file_name
         dtype: audio