Issue #25523: Further a-to-an corrections new in 3.5
diff --git a/Doc/reference/datamodel.rst b/Doc/reference/datamodel.rst
index 3032dc8..764c491 100644
--- a/Doc/reference/datamodel.rst
+++ b/Doc/reference/datamodel.rst
@@ -2358,7 +2358,7 @@
``__aiter__`` implementation, and an *asynchronous iterator* can call
asynchronous code in its ``__anext__`` method.
-Asynchronous iterators can be used in a :keyword:`async for` statement.
+Asynchronous iterators can be used in an :keyword:`async for` statement.
.. method:: object.__aiter__(self)
@@ -2393,7 +2393,7 @@
An *asynchronous context manager* is a *context manager* that is able to
suspend execution in its ``__aenter__`` and ``__aexit__`` methods.
-Asynchronous context managers can be used in a :keyword:`async with` statement.
+Asynchronous context managers can be used in an :keyword:`async with` statement.
.. method:: object.__aenter__(self)