Replace unnecessary reference with a better one

Author: wvu

modules/auxiliary/admin/http/bash_env.rb

@@ -23,7 +23,7 @@ def initialize(info = {})
       'References' => [
         ['CVE', '2014-6271'],
         ['URL', 'https://securityblog.redhat.com/2014/09/24/bash-specially-crafted-environment-variables-code-injection-attack/'],
-        ['URL', 'https://access.redhat.com/site/solutions/1207723']
+        ['URL', 'http://seclists.org/oss-sec/2014/q3/649']
       ],
       'DisclosureDate' => 'Sep 24 2014',
       'License' => MSF_LICENSE