[system-administrators-guide] Past tense: "changed root environment" not "change rooted environment"

[stephenw]

commit 475eb52e27c54818dba3ef9265f93ebdb71516aa
Author: Stephen Wadeley <swadeley at redhat.com>
Date:   Thu Jul 25 16:29:19 2013 +0200

    Past tense: "changed root environment" not "change rooted environment"

 en-US/Mail_Servers.xml |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/en-US/Mail_Servers.xml b/en-US/Mail_Servers.xml
index 32c8317..dc03e0b 100644
--- a/en-US/Mail_Servers.xml
+++ b/en-US/Mail_Servers.xml
@@ -262,7 +262,7 @@
         <primary>Postfix</primary>
       </indexterm>
       <para>Originally developed at IBM by security expert and programmer Wietse Venema, Postfix is a Sendmail-compatible MTA that is designed to be secure, fast, and easy to configure.</para>
-      <para>To improve security, Postfix uses a modular design, where small processes with limited privileges are launched by a <firstterm>master</firstterm> daemon. The smaller, less privileged processes perform very specific tasks related to the various stages of mail delivery and run in a change rooted environment to limit the effects of attacks.</para>
+      <para>To improve security, Postfix uses a modular design, where small processes with limited privileges are launched by a <firstterm>master</firstterm> daemon. The smaller, less privileged processes perform very specific tasks related to the various stages of mail delivery and run in a changed root environment to limit the effects of attacks.</para>
       <para>Configuring Postfix to accept network connections from hosts other than the local computer takes only a few minor changes in its configuration file. Yet for those with more complex needs, Postfix provides a variety of configuration options, as well as third party add-ons that make it a very versatile and full-featured MTA.</para>
       <para>The configuration files for Postfix are human readable and support upward of 250 directives. Unlike Sendmail, no macro processing is required for changes to take effect and the majority of the most commonly used options are described in the heavily commented files.</para>
       <!-- silas: Postfix is default in RHEL6