layers/transportation/: do a tiny code styling (#321)

layers/transportation/class.sql

@@ -17,9 +17,8 @@ CREATE OR REPLACE FUNCTION highway_class(highway TEXT, public_transport TEXT) RE
         WHEN highway IN ('secondary', 'secondary_link') THEN 'secondary'
         WHEN highway IN ('tertiary', 'tertiary_link') THEN 'tertiary'
         WHEN highway IN ('unclassified', 'residential', 'living_street', 'road') THEN 'minor'
-        WHEN highway IN ('service', 'track') THEN highway
         WHEN highway IN ('pedestrian', 'path', 'footway', 'cycleway', 'steps', 'bridleway', 'corridor') OR public_transport IN ('platform') THEN 'path'
-        WHEN highway = 'raceway' THEN 'raceway'
+        WHEN highway IN ('service', 'track', 'raceway') THEN highway
         ELSE NULL
     END;
 $$ LANGUAGE SQL IMMUTABLE;

layers/transportation/mapping.yaml

@@ -187,18 +187,18 @@ tables:
       - tertiary_link
       - unclassified
       - residential
-      - road
       - living_street
-      - raceway
-      - track
-      - service
-      - path
-      - cycleway
-      - bridleway
-      - footway
-      - corridor
+      - road
       - pedestrian
+      - path
+      - footway
+      - cycleway
       - steps
+      - bridleway
+      - corridor
+      - service
+      - track
+      - raceway
       public_transport:
       - platform
       man_made: