fix tag key for kitchen garden to kitchen:style, tweak fields

see https://github.com/openstreetmap/id-tagging-schema/pull/1135

data/presets/leisure/garden/kitchen.json

@@ -3,12 +3,26 @@
     "geometry": [
         "area"
     ],
+    "fields": [
+        "name",
+        "garden/type",
+        "operator",
+        "operator/type"
+    ],
+    "moreFields": [
+        "{@templates/contact}",
+        "access_simple",
+        "charge_fee",
+        "fee",
+        "gnis/feature_id-US",
+        "payment_multi_fee"
+    ],
     "tags": {
         "leisure": "garden",
-        "garden:type": "kitchen"
+        "garden:style": "kitchen"
     },
     "reference": {
-        "key": "garden:type"
+        "key": "garden:style"
     },
     "terms": [
         "vegetable garden",
@@ -17,5 +31,6 @@
         "edible garden",
         "cook's garden"
     ],
+    "matchScore": 1.1,
     "name": "Kitchen Garden"
 }