fix(template_example): typo in the example enum structure

Author: phanorcoll

template_example.json

@@ -6,7 +6,13 @@
       "nodeProperties": {
         "label": "country",
         "country": "country",
-        "selected": {"type":"enum", "values":[{"value":"yes", "weight": 1}, {"value":"no", weight: 0.5]},
+        "selected": {
+          "type": "enum",
+          "values": [
+            { "value": "yes", "weight": 1 },
+            { "value": "no", "weight": 0.5 }
+          ]
+        },
         "created_at": "date",
         "updated_at": "date"
       }