Update the NTP server section to mainly match 5.X and not 4.X

PR:		docs/75489
Submitted by:	Joel Dahl <joel@automatvapen.se>

en_US.ISO8859-1/books/handbook/network-servers/chapter.sgml

@@ -5029,24 +5029,23 @@ driftfile /var/db/ntp.drift</programlisting>
       <title>Running the NTP Server</title>
 
       <para>To ensure the NTP server is started at boot time, add the
-	line <literal>xntpd_enable="YES"</literal> to
+	line <literal>ntpd_enable="YES"</literal> to
 	<filename>/etc/rc.conf</filename>.  If you wish to pass
 	additional flags to &man.ntpd.8;, edit the
-	<varname>xntpd_flags</varname> parameter in
+	<varname>ntpd_flags</varname> parameter in
 	<filename>/etc/rc.conf</filename>.</para>
 
       <para>To start the server without rebooting your machine, run
 	<command>ntpd</command> being sure to specify any additional
-	parameters from <varname>xntpd_flags</varname> in
+	parameters from <varname>ntpd_flags</varname> in
 	<filename>/etc/rc.conf</filename>.  For example:</para>
 
       <screen>&prompt.root; <userinput>ntpd -p /var/run/ntpd.pid</userinput></screen>
 
       <note>
-	<para>Under &os;&nbsp;5.X, various options in
-	  <filename>/etc/rc.conf</filename> have been renamed.  Thus,
-	  you have to replace every instance of <literal>xntpd</literal>
-	  with <literal>ntpd</literal> in the options above.</para></note>
+	<para>Under &os;&nbsp;4.X,
+	  you have to replace every instance of <literal>ntpd</literal>
+	  with <literal>xntpd</literal> in the options above.</para></note>
     </sect2>
 
     <sect2>