Fix typos in code comment and documentation
diff --git a/Doc/library/asyncio-sync.rst b/Doc/library/asyncio-sync.rst
index 1d299ec6..0909352 100644
--- a/Doc/library/asyncio-sync.rst
+++ b/Doc/library/asyncio-sync.rst
@@ -52,7 +52,7 @@
:meth:`acquire` is a coroutine and should be called with ``yield from``.
Locks also support the context management protocol. ``(yield from lock)``
- should be used as context manager expression.
+ should be used as the context manager expression.
This class is :ref:`not thread safe <asyncio-multithreading>`.