[gnome-user-docs] Add link from net-security page

[Michael Hill <mdhill src gnome org>]

commit 154ba867222010655389a75d5935d8a9fdefb3d6
Author: Michael Hill <mdhill gnome org>
Date:   Wed Sep 30 10:24:35 2015 -0400

    Add link from net-security page

 gnome-help/C/net-security.page |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/gnome-help/C/net-security.page b/gnome-help/C/net-security.page
index b1bbd85..1e74b7c 100644
--- a/gnome-help/C/net-security.page
+++ b/gnome-help/C/net-security.page
@@ -16,7 +16,8 @@
 
     <desc>
       <link xref="net-antivirus">Antivirus software</link>,
-      <link xref="net-firewall-on-off">basic firewalls</link>…
+      <link xref="net-antivirus">basic firewalls</link>,
+      <link xref="net-firewall-on-off">firewall ports</link>…
     </desc>
   </info>