Update plugin.json (#25)

Added KB article to plugin

plugin.json

@@ -3,6 +3,7 @@
   "pluginName": "Dynamic List",
   "pluginDescription": "Give your users a great experience. This feature gives users the ability to create community driven lists, each can be public or private. Users can create link, groups, and sub-groups each can be linked to different plug-ins such as a social wall, the possibilities are limitless.",
   "supportEmail": "[email protected]",
+  "supportSite":"https://learn.buildfire.com/en/articles/4759761-how-to-use-the-dynamic-list-plugin",
   "control": {
     "content": {
       "enabled": true
@@ -39,4 +40,4 @@
       "path": "promo.gif"
     }
   ]
-}
+}