[gnome-user-docs] Document Ctrl+Alt+(Up|Down) to switch workspaces

[Petr Kovář <pmkovar src gnome org>]

commit 01f0615a6138496afdea97e68dbc83ead955f8de
Author: Daniel Boles <dboles src gnome org>
Date:   Wed Nov 30 20:53:55 2016 +0000

    Document Ctrl+Alt+(Up|Down) to switch workspaces
    
    https://bugzilla.gnome.org/show_bug.cgi?id=775428

 gnome-help/C/shell-keyboard-shortcuts.page |    6 ++++--
 gnome-help/C/shell-workspaces-switch.page  |    9 +++++----
 2 files changed, 9 insertions(+), 6 deletions(-)
---
diff --git a/gnome-help/C/shell-keyboard-shortcuts.page b/gnome-help/C/shell-keyboard-shortcuts.page
index f7aeb2e..c87c603 100644
--- a/gnome-help/C/shell-keyboard-shortcuts.page
+++ b/gnome-help/C/shell-keyboard-shortcuts.page
@@ -85,8 +85,10 @@ information on navigating user interfaces with only the keyboard.</p>
   </tr>
   <tr xml:id="super-updown">
     <td><p>
-      <keyseq><key>Super</key><key>Page Up</key></keyseq> and
-      <keyseq><key>Super</key><key>Page Down</key></keyseq>
+      <keyseq><key>Super</key><key>Page Up</key></keyseq> or
+      <keyseq><key>Ctrl</key><key>Alt</key><key>Up</key></keyseq>, and
+      <keyseq><key>Super</key><key>Page Down</key></keyseq> or
+      <keyseq><key>Ctrl</key><key>Alt</key><key>Down</key></keyseq>
     </p></td>
     <td><p><link xref="shell-workspaces-switch">Switch between
      workspaces</link>.</p></td>
diff --git a/gnome-help/C/shell-workspaces-switch.page b/gnome-help/C/shell-workspaces-switch.page
index 59f827a..bbcec69 100644
--- a/gnome-help/C/shell-workspaces-switch.page
+++ b/gnome-help/C/shell-workspaces-switch.page
@@ -51,15 +51,16 @@
   <item>
     <p>Press
     <keyseq><key xref="keyboard-key-super">Super</key><key>Page Up</key></keyseq>
-    to move to a workspace which is above the current workspace in the
-    workspace selector.</p>
+    or <keyseq><key>Ctrl</key><key>Alt</key><key>Up</key></keyseq> to move to a
+    workspace which is above the current workspace in the workspace selector.
+    </p>
   </item>
   <item>
-    <p>Press <keyseq><key>Super</key><key>Page Down</key></keyseq> to move to a
+    <p>Press <keyseq><key>Super</key><key>Page Down</key></keyseq> or
+    <keyseq><key>Ctrl</key><key>Alt</key><key>Down</key></keyseq> to move to a
     workspace which is below the current workspace in the workspace selector.
     </p>
   </item>
  </list>
 
-
 </page>