Issue #20650: Tweak some awkward wording.
diff --git a/Doc/library/asyncio-eventloop.rst b/Doc/library/asyncio-eventloop.rst
index 9d54964..171b93b 100644
--- a/Doc/library/asyncio-eventloop.rst
+++ b/Doc/library/asyncio-eventloop.rst
@@ -589,8 +589,8 @@
Arrange for a callback to be called in the specified executor.
- *executor* is a :class:`~concurrent.futures.Executor` instance,
- the default executor is used if *executor* is ``None``.
+ The *executor* argument should be an :class:`~concurrent.futures.Executor`
+ instance. The default executor is used if *executor* is ``None``.
This method is a :ref:`coroutine <coroutine>`.