Improvements for peninsula preset (#844)

Author: harahu

data/presets/natural/cape.json

@@ -16,6 +16,7 @@
         "coastline",
         "erosion",
         "headland",
+        "peninsula",
         "promontory"
     ],
     "name": "Cape"

data/presets/natural/peninsula.json

@@ -1,5 +1,5 @@
 {
-    "icon": "temaki-beach",
+    "icon": "temaki-cape_landform",
     "geometry": [
         "point",
         "area"
@@ -10,5 +10,15 @@
     "tags": {
         "natural": "peninsula"
     },
+    "terms": [
+        "bay",
+        "cape",
+        "coastline",
+        "erosion",
+        "headland",
+        "island",
+        "islet",
+        "promontory"
+    ],
     "name": "Peninsula"
 }