Fix offline reference

Fixes #765

Author: icarito

offline-reference/extra/js/reference.js

@@ -4595,7 +4595,7 @@ define('router',[
     get: function(searchClass, searchItem) {
 
       // if looking for a library page, redirect
-      if (searchClass === 'p5.sound')
+      if (searchClass === 'p5.sound'
           && !searchItem) {
         window.location.hash = '/libraries/'+searchClass;
         return;
@@ -4811,4 +4811,4 @@ require([
 });
 
 define("main", function(){});
-}());
+}());