Update doubly_linked_list_two.py

Author: MaximSmolskiy

data_structures/linked_list/doubly_linked_list_two.py

@@ -244,7 +244,8 @@ def create_linked_list() -> None:
     >>> linked_list.insert_at_position(position=1, value=10)
     >>> linked_list
     LinkedList(
-        head=Node(data=10, previous=None, next=None), tail=Node(data=10, previous=None, next=None))
+        head=Node(data=10, previous=None, next=None),
+        tail=Node(data=10, previous=None, next=None))
     >>> str(linked_list)
     '10'
     >>> linked_list.insert_at_position(position=2, value=20)