[system-administrators-guide] Change two examples to apachectl configtest

[stephenw]

commit cfef84fc02344dccd20db8b73f672009d0b06311
Author: Stephen Wadeley <swadeley at redhat.com>
Date:   Wed Aug 13 22:59:11 2014 +0200

    Change two examples to apachectl configtest
    
    thank you Kwan for reporting this ommission

 en-US/The_Apache_HTTP_Server.xml |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/en-US/The_Apache_HTTP_Server.xml b/en-US/The_Apache_HTTP_Server.xml
index 32f2422..148f94b 100644
--- a/en-US/The_Apache_HTTP_Server.xml
+++ b/en-US/The_Apache_HTTP_Server.xml
@@ -275,7 +275,7 @@ List of <systemitem class="daemon">httpd</systemitem> modules removed in &MAJORO
     <para>
       Note that you can check the configuration for possible errors by using the following command:
     </para>
-    <screen>~]# <command>service httpd configtest</command>
+    <screen>~]# <command>apachectl configtest</command>
 Syntax OK</screen>
     <para>
       For more information on upgrading the Apache HTTP Server configuration from version 2.2 to 2.4, see <ulink url="http://httpd.apache.org/docs/2.4/upgrading.html"/>.
@@ -443,7 +443,7 @@ active</screen>
     <para>
        To check the configuration for possible errors, type the following at a shell prompt:
     </para>
-    <screen>~]# <command>service httpd configtest</command>
+    <screen>~]# <command>apachectl configtest</command>
 Syntax OK</screen>
     <para>
       To make the recovery from mistakes easier, it is recommended that you make a copy of the original file before editing it.