Update bike.json

Author: caspg

core/src/main/resources/com/graphhopper/custom_models/bike.json

@@ -14,7 +14,7 @@
     { "if": "country == DEU && road_class == BRIDLEWAY && bike_road_access != YES", "multiply_by": "0" },
     { "if": "!bike_access && (!backward_bike_access || roundabout)",  "multiply_by": "0" },
     { "else_if": "!bike_access && backward_bike_access",  "multiply_by": "0.2" },
-    { "if": "road_class != CYCLEWAY", "multiply_by": 0.8 }
+    { "if": "road_class != CYCLEWAY", "multiply_by": 0.6 }
   ],
   "speed": [
     { "if": "true", "limit_to": "bike_average_speed" },