Fix wrong return type

Author: Mauko Quiroga

openfisca_core/indexed_enums/enum_array.py

@@ -4,7 +4,7 @@
 
 import numpy
 
-from openfisca_core.types import ArrayType
+from openfisca_core.types import ArrayLike, ArrayType
 
 from .. import indexed_enums as enums
 
@@ -160,7 +160,7 @@ def _forbidden_operation(self, other: Any) -> NoReturn:
     __and__ = _forbidden_operation
     __or__ = _forbidden_operation
 
-    def decode(self) -> ArrayType["enums.Enum"]:
+    def decode(self) -> ArrayLike[enums.Enum]:
         """Decodes itself to a normal array.
 
         Returns: