Fix err in transportation update_gbr_route_members

The query was producing 3 columns - `(member, ref, network)`,
whereas osm_id is a required field (otherwise it throws null constraint).

layers/transportation_name/update_route_member.sql

@@ -8,7 +8,7 @@ BEGIN
   select st_buffer(geometry, 10000) into gbr_geom from ne_10m_admin_0_countries where iso_a2 = 'GB';
   delete from osm_route_member where network IN('omt-gb-motorway', 'omt-gb-trunk');
 
-  insert into osm_route_member (member, ref, network)
+  insert into osm_route_member (osm_id, ref, network)
     (
       SELECT hw.osm_id, substring(hw.ref from E'^[AM][0-9AM()]+'), 'omt-gb-motorway'
       from osm_highway_linestring hw