Update ptparl.py

ptparl.py

@@ -73,7 +73,7 @@ class PTPARL(datasets.GeneratorBasedBuilder):
                     ]
                 ),
                 "wing": datasets.features.ClassLabel(
-                    names=[["CENTER", "LEAN_RIGHT", "LEFT", "LEAN_LEFT", "RIGHT"]]
+                    names=["CENTER", "LEAN_RIGHT", "LEFT", "LEAN_LEFT", "RIGHT"]
                 ),
             }
         )