Address one more review comment by @equalsJeffH

index.bs

@@ -2934,7 +2934,8 @@ an assertion. Its {{PublicKeyCredentialRequestOptions/challenge}} member MUST be
             and the [=user account=] MAY be identified by the {{AuthenticatorAssertionResponse/userHandle}}
             of the resulting {{AuthenticatorAssertionResponse}}.
             If the available [=authenticators=] [=contain=] more than one [=discoverable credential=] [=scoped=] to the [=[RP]=],
-            the credentials are displayed for the user to select from (see step 7 of [[#sctn-op-get-assertion]]).
+            the credentials are displayed by the [=client platform=] or [=authenticator=]
+            for the user to select from (see step 7 of [[#sctn-op-get-assertion]]).
 
         If not [=list/empty=], the client MUST return an error if none of the listed credentials can be used.