Fix Range deserializer function
@@ -87,7 +87,7 @@ class Range(fields.Field):
"{} accept values formatted as the following:\n"
" * str: {}\n"
" * dict: {}\n"
- " * list: {}}".format(
+ " * list: {}".format(
self.__class__.__name__,
':'.join(self.REQUIRED_KEYS),
dict(zip(self.REQUIRED_KEYS, ['v1', 'v2', 'v3'])),
