add reference info

Author: mfadzilr

modules/exploits/windows/ftp/kmftp_utility_cwd.rb

@@ -28,7 +28,8 @@ def initialize(info = {})
       'License' => MSF_LICENSE,
       'References' =>
         [
-          [ 'EBD', '37908' ]
+          [ 'EBD', '37908' ],
+          [ 'URL', 'https://www.exploit-db.com/exploits/37908/' ]
         ],
       'Privileged' => false,
       'Payload' =>