feat: harmonize object keys

src/index.template.html

@@ -36,17 +36,17 @@
         "show": true,
         "types": [
           {
-            "content-type": "Person",
+            "contenttype": "Person",
             "icon": "fasUser",
             "label": "Names"
           },
           {
-            "content-type": "Place",
+            "contenttype": "Place",
             "icon": "fasMapMarkerAlt",
             "label": "Places"
           },
           {
-            "content-type": "Editorial Comment",
+            "contenttype": "Editorial Comment",
             "icon": "fasComment",
             "label": "Comments"
           }