Allow guests to get the members for a room (MSC2689)

specification/modules/guest_access.rst

@@ -54,6 +54,7 @@ retrieving events:
 * `GET /rooms/:room_id/event/:event_id <#get-matrix-client-%CLIENT_MAJOR_VERSION%-rooms-roomid-event-eventid>`_
 * `GET /rooms/:room_id/state/:event_type/:state_key <#get-matrix-client-%CLIENT_MAJOR_VERSION%-rooms-roomid-state-eventtype-statekey>`_
 * `GET /rooms/:room_id/messages <#get-matrix-client-%CLIENT_MAJOR_VERSION%-rooms-roomid-messages>`_
+* `GET /rooms/:room_id/members <#get-matrix-client-%CLIENT_MAJOR_VERSION%-rooms-roomid-members>`_
 * `GET /rooms/:room_id/initialSync <#get-matrix-client-%CLIENT_MAJOR_VERSION%-rooms-roomid-initialsync>`_
 * `GET /sync <#get-matrix-client-%CLIENT_MAJOR_VERSION%-sync>`_
 * `GET /events`__ as used for room previews.