Update fire_hydrant.json (move fire_hydrant/position from section moreFields up to fields) (#1441)

Update fire_hydrant (fields / moreFields) move fire_hydrant/position (wiki: https://wiki.openstreetmap.org/wiki/Key:fire_hydrant:position) from section moreFields up to fields, because it is one of the most common tag-combination to emergency=fire_hydrant, see https://taginfo.openstreetmap.org/tags/emergency=fire_hydrant#combinations and has already nicely organic groth in the past, see: emergency=fire_hydrant

Author: sun-geo

data/presets/emergency/fire_hydrant.json

@@ -4,13 +4,13 @@
         "ref",
         "fire_hydrant/type",
         "colour",
+        "fire_hydrant/position",
         "water_source",
         "couplings"
     ],
     "moreFields": [
         "fire_hydrant/diameter",
         "fire_hydrant/pressure",
-        "fire_hydrant/position",
         "level",
         "survey/date"
     ],