Fix indent.
diff --git a/Doc/library/queue.rst b/Doc/library/queue.rst
index 2373929..e3596bb 100644
--- a/Doc/library/queue.rst
+++ b/Doc/library/queue.rst
@@ -177,7 +177,7 @@
A queue class for use in a multi-processing (rather than multi-threading)
context.
- :class:`collections.deque` is an alternative implementation of unbounded
+ :class:`collections.deque` is an alternative implementation of unbounded
queues with fast atomic :func:`append` and :func:`popleft` operations that
do not require locking.