[totem/mallard-documentation] Fix a copy and paste error of mine in the previous commit

[Andre Klapper <aklapper src gnome org>]

commit 7fc94a35675f18c963de4c562462e56f3679c020
Author: Andre Klapper <a9016009 gmx de>
Date:   Thu Jan 10 15:05:30 2019 +0100

    Fix a copy and paste error of mine in the previous commit

 help/C/properties.page | 4 ----
 1 file changed, 4 deletions(-)
---
diff --git a/help/C/properties.page b/help/C/properties.page
index 14c766c2..871967af 100644
--- a/help/C/properties.page
+++ b/help/C/properties.page
@@ -32,10 +32,6 @@
   <gui>Sidebar</gui> in three sections:
   </p>
 
-      <p>Press the menu button in the top-right corner of the window and select
-      <gui style="menuitem">Take Screenshot</gui>.</p>
-
-
   <terms>
     <item>
       <title><code>General</code></title>