Issue #3443643 - Fix spell

Closes #3443643

js/splashify_init.js

@@ -4,7 +4,7 @@
       var jsmode = settings.splashify.mode,
         referrer = document.referrer + '',
         hostname = window.location.hostname + '',
-        referrer_check = settings.splashify.refferer_check;
+        referrer_check = settings.splashify.referrer_check;
 
       // This updates the referer string by taking out the url parameter from the
       // url...which is included from google search results (as an example).