[gnome-user-docs] gnome-help: Fix a wrong markup tag

[Andre Klapper <aklapper src gnome org>]

commit 33d3c340ea5952e28d11e20b56b556aa2c705854
Author: Andre Klapper <a9016009 gmx de>
Date:   Thu Mar 25 23:03:16 2021 +0100

    gnome-help: Fix a wrong markup tag

 gnome-help/C/keyboard-shortcuts-set.page | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gnome-help/C/keyboard-shortcuts-set.page b/gnome-help/C/keyboard-shortcuts-set.page
index 8cba5fab..382259d0 100644
--- a/gnome-help/C/keyboard-shortcuts-set.page
+++ b/gnome-help/C/keyboard-shortcuts-set.page
@@ -492,7 +492,7 @@
 <title>Custom shortcuts</title>
 
   <p>To create your own application keyboard shortcut in the
-  <app>Keyboard</app> settings:</p>
+  <gui>Keyboard</gui> settings:</p>
 
   <steps>
     <item>