Fix facade gardens build

assets/themes/facadegardens/facadegardens.json

@@ -13,7 +13,8 @@
     "en": "<a href='https://nl.wikipedia.org/wiki/Geveltuin' target=_blank>Facade gardens</a>, green facades and trees in the city not only bring peace and quiet, but also a more beautiful city, greater biodiversity, a cooling effect and better air quality. <br/> Klimaan VZW and Mechelen Klimaatneutraal want to map existing and new facade gardens as an example for people who want to build their own garden or for city walkers who love nature.<br/>More info about the project at <a href='https://klimaan.be/' target=_blank>klimaan.be</a>."
   },
   "language": [
-    "nl","en"
+    "nl",
+    "en"
   ],
   "maintainer": "joost schouppe; stla",
   "icon": "./assets/themes/facadegardens/geveltuin.svg",
@@ -31,11 +32,13 @@
         "en": "Facade gardens"
       },
       "minzoom": 12,
-      "overpassTags": {
+      "source": {
+        "osmTags": {
           "and": [
             "leisure=garden",
             "garden:type=facade_garden"
           ]
+        }
       },
       "title": {
         "render": {