add covered as optional field to storage tank

tyrasd · tyrasd · commit 769c4df21296 · 2023-01-09T15:44:02.000+01:00
fixes openstreetmap#344 (comment)
diff --git a/data/presets/man_made/storage_tank.json b/data/presets/man_made/storage_tank.json
@@ -4,11 +4,12 @@
         "content",
         "operator",
         "material",
-        "building_area_yes",
+        "building_area",
         "height",
         "capacity_volume"
     ],
     "moreFields": [
+        "covered",
         "layer",
         "location",
         "manufacturer"
