Use correct data type in coverage score.
Use correct data type in coverage score.

thomaskonrad/osm-austria-building-coverage,thomaskonrad/osm-austria-building-coverage,thomaskonrad/osm-austria-building-coverage,thomaskonrad/osm_austria_building_coverage,thomaskonrad/osm_austria_building_coverage,thomaskonrad/osm_austria_building_coverage,thomaskonrad/osm_austria_building_coverage,thomaskonrad/osm-austria-building-coverage