add strings for fields: fuel, entrance and substation (#467)

data/presets/amenity/fuel.json

@@ -5,7 +5,8 @@
         "brand",
         "operator",
         "address",
-        "fuel_multi",
+        "fuel/fuel_multi",
+        "fuel/fuel_multi-RU",
         "self_service",
         "building_area"
     ],

data/presets/shop/fuel.json

@@ -2,7 +2,7 @@
     "icon": "temaki-propane_tank",
     "fields": [
         "{shop}",
-        "fuel_multi"
+        "fuel/fuel_multi"
     ],
     "geometry": [
         "point",

data/presets/waterway/fuel.json

@@ -5,7 +5,7 @@
         "operator",
         "address",
         "opening_hours",
-        "fuel_multi"
+        "fuel/fuel_multi"
     ],
     "moreFields": [
         "branch_brand",