Update proposals/4028-push-all-encrypted-events-except-for-muted-rooms.md

Co-authored-by: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com>

proposals/4028-push-all-encrypted-events-except-for-muted-rooms.md

@@ -233,7 +233,7 @@ During development the new push rule shall use `org.matrix.msc4028.encrypted_eve
 Caution: this unstable push rule will be enabled by default like the stable push rule, the server owners should wait for
 the clients to support a minimum this MSC before enabling the MSC server side.
 
-To ensure the server supports the functionality before a spec release, clients should look for the unstable feature `org.matrix.msc4028` in the response of the `/_matrix/clients/versions` endpoint. Once released in the specification, clients should be checking for server support through advertised spec versions instead.
+To ensure the server supports the functionality before a spec release, clients should interpret an unstable feature `org.matrix.msc4028` with a value of `true` in the response of the `/_matrix/clients/versions` endpoint as the feature being supported by the homeserver. Once released in the specification, clients should be checking for server support through advertised spec versions instead.
 
 Once this MSC has successfully passed a merge FCP, clients should use `.m.rule.encrypted_event` as the right push rule. The unstable `org.matrix.msc4028.encrypted_event` can be used only as a fallback if the right one is missing (backwards compatibility with slightly old servers).