PEP 705: fix typo in "Motivation" section. (#3640)

peps/pep-0705.rst

@@ -118,7 +118,7 @@ However, this no longer works once you start nesting dictionaries::
         d["name"] = name
         update_metadata_timestamp(d)  # Type check error: "metadata" is not of type HasTimestamp
 
-This looks like an error, but is simply due to the (unwanted) ability to overwrite the ``metadata`` item held by the ``HasTimestampedMetadata`` instance with a different ``HasTimestamp`` instance, that may no longer be a ``UserAudit`` instance.
+This looks like an error, but is simply due to the (unwanted) ability to overwrite the ``metadata`` item held by the ``HasTimestampedMetadata`` instance with a different ``HasTimestamp`` instance, that may no longer be a ``Logs`` instance.
 
 It is possible to work around this issue with generics (as of Python 3.11), but it is very complicated, requiring a type parameter for every nested dict.