[gnome-user-docs] Add context for None

[Marek Černocký <mcernocky src gnome org>]

commit 1583496b2ddf2eb0b64d94317b31b209e9869fda
Author: Marek Černocký <marek manet cz>
Date:   Thu Nov 12 16:16:58 2015 +0100

    Add context for None

 gnome-help/C/net-proxy.page |   11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)
---
diff --git a/gnome-help/C/net-proxy.page b/gnome-help/C/net-proxy.page
index eca8c44..2a1a289 100644
--- a/gnome-help/C/net-proxy.page
+++ b/gnome-help/C/net-proxy.page
@@ -1,9 +1,14 @@
 <page xmlns="http://projectmallard.org/1.0/";
       xmlns:its="http://www.w3.org/2005/11/its";
+      xmlns:itst="http://itstool.org/extensions/";
       type="topic" style="task"
       id="net-proxy">
 
   <info>
+    <its:rules xmlns:its="http://www.w3.org/2005/11/its"; version="1.0"
+               xmlns:xlink="http://www.w3.org/1999/xlink";
+               xlink:type="simple" xlink:href="gnome-help.its"/>
+
     <link type="guide" xref="net-general"/>
 
     <revision pkgversion="3.7.1" version="0.2" date="2012-11-16" status="outdated"/>
@@ -69,18 +74,18 @@
       <p>Choose which proxy method you want to use from:</p>
       <terms>
         <item>
-          <title>None</title>
+          <title><gui itst:context="proxy">None</gui></title>
           <p>The applications will use a direct connection to fetch the content
           from the web.</p>
         </item>
         <item>
-          <title>Manual</title>
+          <title><gui>Manual</gui></title>
           <p>For each proxied protocol, define the address of a proxy and port
           for the protocols. The protocols are <gui>HTTP</gui>,
           <gui>HTTPS</gui>, <gui>FTP</gui> and <gui>SOCKS</gui>.</p>
         </item>
         <item>
-          <title>Automatic</title>
+          <title><gui>Automatic</gui></title>
           <p>A URL pointing to a resource, which contains the appropriate
           configuration for your system.</p>
         </item>