Documentation patch: fix 'vunerabilites'->'vulnerabilities' spelling.

docs/en/xml/security.xml

 <!-- <!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"> -->
-<!-- $Id: security.xml,v 1.11 2008/04/04 06:48:18 jocuri%softhome.net Exp $ -->
+<!-- $Id: security.xml,v 1.12 2008/04/04 06:48:19 jocuri%softhome.net Exp $ -->
 
 <chapter id="security">
 <title>Bugzilla Security</title>
@@ -141,7 +141,7 @@
       have no other reason to access MySQL remotely, then you should disable
       the network access. This, along with the suggestion in
       <xref linkend="security-os-ports"/>, will help protect your system from
-      any remote vulnerabilites in MySQL.
+      any remote vulnerabilities in MySQL.
       </para>
       
       <example id="security-mysql-network-ex">