Update title and description

Author: wchen-r7

modules/exploits/multi/http/caidao_php_backdoor_exec.rb

@@ -13,9 +13,10 @@ class Metasploit4 < Msf::Exploit::Remote
 
   def initialize(info = {})
     super(update_info(info,
-      'Name'              => 'Chinese Caidao PHP Backdoor Code Execution',
+      'Name'              => 'China Chopper Caidao PHP Backdoor Code Execution',
       'Description'       => %q{
-        This module exploits chinese caidao php backdoor.
+        This module takes advantage of the China Chopper Webshell that is
+        commonly used by Chinese hackers.
       },
       'License'           => MSF_LICENSE,
       'Author'            => ['Nixawk'],