[system-administrators-guide] Incorrect firewall option

[stephenw]

commit e54b1e04651a8607da8cbeb2ecc6935e9ef65f33
Author: Stephen Wadeley <swadeley at redhat.com>
Date:   Wed Feb 4 09:16:03 2015 +0100

    Incorrect firewall option

 en-US/TigerVNC.xml |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/en-US/TigerVNC.xml b/en-US/TigerVNC.xml
index 32c88fc..1221bfb 100644
--- a/en-US/TigerVNC.xml
+++ b/en-US/TigerVNC.xml
@@ -269,7 +269,7 @@ public (default, active)
 </procedure>
 
 <para>
-  To open a specific port or range of ports make use of the <option>--list-ports</option> option to the <command>firewall-cmd</command> command Line tool. For example, VNC display <literal>4</literal> requires port <literal>5904</literal> to be opened for <systemitem class="protocol">TCP</systemitem> traffic.
+  To open a specific port or range of ports make use of the <option>--add-port</option> option to the <command>firewall-cmd</command> command Line tool. For example, VNC display <literal>4</literal> requires port <literal>5904</literal> to be opened for <systemitem class="protocol">TCP</systemitem> traffic.
 </para>
 <procedure id="proc-Opening-Ports_in_firewalld">
 <title>Opening Ports in firewalld</title>