correct land-low layer name for osm2pgsql.mml
correct land-low layer name for osm2pgsql.mml

jeffaudi/osm-hybrid,Sweetymeow/osm-bright,raumobil/osm-bright,mapbox/osm-bright,pinkflozd/osm-bright,silph-io/osm-silph,saydulk/osm-bright,brelevenix/osm-bright-tregor