another wording tweak

Author: adqm

peps/pep-0798.rst

@@ -799,8 +799,9 @@ benefits and drawbacks, with no option being clearly superior on all fronts.
 The semantics proposed in :ref:`pep798-genexpsemantics` represent a reasonable
 compromise where unpacking in both synchronous and asynchronous generator
 expressions mirrors common ways of writing equivalent generators currently.
-Moreover, these subtle differences are unlikely to be impactful for the common
-use case of combining simple collections.
+Moreover, these subtle differences are unlikely to be impactful for common use
+cases (for example, there is no difference for the likely most-common use case
+of combining simple collections).
 
 As suggested above, this decision should be revisited in the event that
 asynchronous generators receive support for ``yield from`` in the future, in