Merge pull request #3 from nurmanhabib/hotfix/typo-operator

Hotfix typo operator

Author: nurmanhabib

src/NavCollection.php

@@ -99,7 +99,7 @@ public function transform(callable $callback)
     {
         $this->items = array_map(function (Nav $nav) use ($callback) {
             return $this->transformNav($nav, $callback);
-        }, $this-items);
+        }, $this->items);
 
         return $this;
     }