Revert the change that causes errors

Author: Morteza-24

Doc/howto/a-conceptual-overview-of-asyncio.rst

@@ -347,7 +347,7 @@ The design intentionally trades off some conceptual clarity around usage of
 ``await`` for improved performance.
 Each time a task is awaited, control needs to be passed all the way up the
 call stack to the event loop.
-That might sound minor, but in a large program with many ``await``s and a deep
+That might sound minor, but in a large program with many ``await`` statements and a deep
 call stack, that overhead can add up to a meaningful performance drag.
 
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