[gnome-user-docs] Update how to set custom keyboard shortcuts for 3.28

[Andre Klapper <aklapper src gnome org>]

commit 1185a502bdc49a1bb64d8e9557c2b3dd03fd7845
Author: Andre Klapper <a9016009 gmx de>
Date:   Tue Sep 11 01:55:15 2018 +0200

    Update how to set custom keyboard shortcuts for 3.28

 gnome-help/C/keyboard-shortcuts-set.page | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)
---
diff --git a/gnome-help/C/keyboard-shortcuts-set.page b/gnome-help/C/keyboard-shortcuts-set.page
index 0d35de50..b18a729a 100644
--- a/gnome-help/C/keyboard-shortcuts-set.page
+++ b/gnome-help/C/keyboard-shortcuts-set.page
@@ -12,6 +12,7 @@
     <revision pkgversion="3.9.92" date="2013-10-11" status="candidate"/>
     <revision pkgversion="3.13.92" date="2014-09-22" status="candidate"/>
     <revision pkgversion="3.17.90" date="2015-08-30" status="candidate"/>
+    <revision pkgversion="3.28.2" date="2018-09-11" status="candidate"/>
 
     <credit type="author">
       <name>Michael Hill</name>
@@ -33,6 +34,10 @@
       <name>Ekaterina Gerasimova</name>
       <email>kittykat3756 gmail com</email>
     </credit>
+    <credit type="editor">
+      <name>Andre Klapper</name>
+      <email>ak-47 gmx net</email>
+    </credit>
 
     <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude"/>
 
@@ -471,21 +476,23 @@
 
   <steps>
     <item>
-      <p>Click the <gui style="button">+</gui> button. The <gui>Custom
-      Shortcut</gui> window will appear.</p>
+      <p>Click the <gui style="button">+</gui> button at the bottom. The
+      <gui>Add Custom Shortcut</gui> window will appear.</p>
     </item>
     <item>
       <p>Type a <gui>Name</gui> to identify the shortcut, and a
-      <gui>Command</gui> to run an application, then click <gui>Add</gui>.
+      <gui>Command</gui> to run an application.
       For example, if you wanted the shortcut to open <app>Rhythmbox</app>, you
       could name it <input>Music</input> and use the <input>rhythmbox</input>
       command.</p>
     </item>
     <item>
-      <p>Click <gui>Disabled</gui> in the row that was just added. When it
-      changes to <gui>New accelerator…</gui>, hold down the desired shortcut
+      <p>Click <gui>Set Shortcut…</gui> and hold down the desired shortcut
       key combination.</p>
     </item>
+    <item>
+      <p>Click <gui>Add</gui>.</p>
+    </item>
   </steps>
 
   <p>The command name that you type should be a valid system command. You can
@@ -494,8 +501,8 @@
   application itself.</p>
 
   <p>If you want to change the command that is associated with a custom
-  keyboard shortcut, double-click the <em>name</em> of the shortcut. The
-  <gui>Custom Shortcut</gui> window will appear, and you can edit the
+  keyboard shortcut, click the <em>name</em> of the shortcut. The
+  <gui>Set Custom Shortcut</gui> window will appear, and you can edit the
   command.</p>
 
 </section>