Fix description.

modules/exploits/multi/http/nostromo_code_exec.rb

@@ -14,7 +14,7 @@ class MetasploitModule < Msf::Exploit::Remote
       'Name'           => 'Nostromo Directory Traversal Remote Command Execution',
       'Description'    => %q{
           This module exploits a remote command execution vulnerability in
-        Nostromo <= 1.9.6. This issue is caused by a directory Traversal
+        Nostromo <= 1.9.6. This issue is caused by a directory traversal
         in the function http_verify in nostromo nhttpd allowing an attacker
         to achieve remote code execution via a crafted HTTP request.
       },