[gnome-user-docs] Update shell-windows-tiled.page

[Petr Kovář <pmkovar src gnome org>]

commit 9866fac9a9454e38731892610d90a6cf4f372811
Author: Gunnar Hjalmarsson <gunnarhj ubuntu com>
Date:   Fri May 18 19:09:54 2018 +0000

    Update shell-windows-tiled.page

 gnome-help/C/shell-windows-tiled.page | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gnome-help/C/shell-windows-tiled.page b/gnome-help/C/shell-windows-tiled.page
index 11b30236..d5686ae3 100644
--- a/gnome-help/C/shell-windows-tiled.page
+++ b/gnome-help/C/shell-windows-tiled.page
@@ -35,7 +35,7 @@
   the screen, or use the same keyboard shortcut you used to maximize.</p>
 
   <note style="tip">
-    <p>Hold down the <key>Alt</key> key and drag anywhere in a window to move
+    <p>Hold down the <key>Super</key> key and drag anywhere in a window to move
     it.</p>
   </note>