style: fix psr2

Author: streamtw

src/Controllers/RenameController.php

@@ -37,7 +37,7 @@ public function getRename()
 
         if ($is_directory && config('lfm.alphanumeric_directory') && preg_match('/[^\w-]/i', $new_name)) {
             return parent::error('folder-alnum');
-        } else if (config('lfm.alphanumeric_filename') && preg_match('/[^.\w-]/i', $new_name)) {
+        } elseif (config('lfm.alphanumeric_filename') && preg_match('/[^.\w-]/i', $new_name)) {
 	        return parent::error('file-alnum');
         } elseif ($this->lfm->setName($new_name)->exists()) {
             return parent::error('rename');