revert deque(s)

.codespell/ignore-words.txt

@@ -15,4 +15,5 @@ busses
 cyphertext
 dum
 deque
+deques
 extint

docs/library/collections.rst

@@ -16,8 +16,8 @@ Classes
 
 .. function:: deque(iterable, maxlen[, flags])
 
-    Dequeues (double-ended queues) are a list-like container that support O(1)
-    appends and pops from either side of the deque.  New dequeues are created
+    Deques (double-ended queues) are a list-like container that support O(1)
+    appends and pops from either side of the deque.  New deques are created
     using the following arguments:
 
         - *iterable* must be the empty tuple, and the new deque is created empty.

tests/basics/deque2.py

@@ -1,4 +1,4 @@
-# Tests for dequeues with "check overflow" flag and other extensions
+# Tests for deques with "check overflow" flag and other extensions
 # wrt to CPython.
 try:
     try:
@@ -22,7 +22,7 @@ try:
 except ValueError:
     print("ValueError")
 
-# Only fixed-size dequeues are supported, so length arg is mandatory
+# Only fixed-size deques are supported, so length arg is mandatory
 try:
     deque(())
 except TypeError: