Fix typo in asynchronous generator iterator documentation (GH-10542)


Remove an unnecessary "that":
... will execute that the body ... ->  ... will execute the body ...
(cherry picked from commit 25221b328339fb1726b58742e91b6e49c178023a)

Co-authored-by: Sebastián Ramírez <tiangolo@gmail.com>
diff --git a/Doc/glossary.rst b/Doc/glossary.rst
index ace7e64..b8d98dd 100644
--- a/Doc/glossary.rst
+++ b/Doc/glossary.rst
@@ -108,8 +108,8 @@
 
       This is an :term:`asynchronous iterator` which when called using the
       :meth:`__anext__` method returns an awaitable object which will execute
-      that the body of the asynchronous generator function until the
-      next :keyword:`yield` expression.
+      the body of the asynchronous generator function until the next
+      :keyword:`yield` expression.
 
       Each :keyword:`yield` temporarily suspends processing, remembering the
       location execution state (including local variables and pending