Fix some docs typos (#386)

Author: AlexWaygood

CHANGELOG.md

@@ -26,11 +26,12 @@
   and the second parameter of `typing_extensions.AsyncGenerator`,
   now default to `None`. This matches the behaviour of `typing.Generator`
   and `typing.AsyncGenerator` on Python 3.13+.
-- `typing.ContextManager` and `typing.AsyncContextManager` now have an
-  optional second parameter, which defaults to `Optional[bool]`. The new
-  parameter signifies the return type of the `__(a)exit__` method,
-  matching `typing.ContextManager` and `typing.AsyncContextManager` on
-  Python 3.13+.
+- `typing_extensions.ContextManager` and
+  `typing_extensions.AsyncContextManager` now have an optional second
+  parameter, which defaults to `Optional[bool]`. The new parameter
+  signifies the return type of the `__(a)exit__` method, matching
+  `typing.ContextManager` and `typing.AsyncContextManager` on Python
+  3.13+.
 
 # Release 4.11.0 (April 5, 2024)
 

doc/index.rst

@@ -967,8 +967,8 @@ versions of Python, but all are listed here for completeness.
 
    .. versionchanged:: 4.12.0
 
-      ``AsyncContextManager`` now has an optional second parameter, defaulting to
-      ``Optional[bool]``, signifying the return type of the ``__aexit__`` method.
+      ``ContextManager`` now has an optional second parameter, defaulting to
+      ``Optional[bool]``, signifying the return type of the ``__exit__`` method.
 
 .. class:: Coroutine