Fix incorrect doctest output for example of deques

Author: lqhuang

docs/structuring.md

@@ -154,20 +154,20 @@ to deques are:
 - `Deque[T]`
 - `deque[T]`
 
-In all cases, a new **unbounded** deque (`maxlen=None`) will be returned, so this operation can be used to
-copy an iterable into a deque.
+In all cases, a new **unbounded** deque (`maxlen=None`) will be returned, 
+so this operation can be used to copy an iterable into a deque.
 If you want to convert into bounded `deque`, registering a custom structuring hook is a good approach.
 
 ```{doctest}
 >>> cattrs.structure((1, 2, 3), deque[int])
-[1, 2, 3]
+deque([1, 2, 3])
 ```
 
 These generic types are composable with all other converters.
 
 ```{doctest}
 >>> cattrs.structure((1, None, 3), deque[Optional[str]])
-['1', None, '3']
+deque(['1', None, '3'])
 ```
 
 ```{versionadded} 23.1.0