[simple-scan] app-vindow.vala: Change shortcut of Keyboard Shortcuts dialog

[Bartosz <bkosiorek src gnome org>]

commit 52be39574598e0eb6f830e7fa18f435f1c80eb48
Author: Sabri Ünal <libreajans gmail com>
Date:   Fri Mar 6 21:51:28 2020 +0300

    app-vindow.vala: Change shortcut of Keyboard Shortcuts dialog
    
    Due to a conflict, change shortcut of Keyboard Shortcuts dialog
    from ctrl+f1 to ctrl+question.
    
    https://gitlab.gnome.org/GNOME/gtk/issues/626

 src/app-window.vala | 2 +-
 src/help-overlay.ui | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/app-window.vala b/src/app-window.vala
index d0ea5c2..db7e8a4 100644
--- a/src/app-window.vala
+++ b/src/app-window.vala
@@ -1834,7 +1834,7 @@ public class AppWindow : Gtk.ApplicationWindow
         app.set_accels_for_action ("app.print", { "<Ctrl>P" });
         app.set_accels_for_action ("app.help", { "F1" });
         app.set_accels_for_action ("app.quit", { "<Ctrl>Q" });
-        app.set_accels_for_action ("win.show-help-overlay", { "<Ctrl>F1" });
+        app.set_accels_for_action ("win.show-help-overlay", { "<Ctrl>question" });
 
         var gear_menu = new Menu ();
         var section = new Menu ();
diff --git a/src/help-overlay.ui b/src/help-overlay.ui
index 7a77bfd..105d876 100644
--- a/src/help-overlay.ui
+++ b/src/help-overlay.ui
@@ -143,7 +143,7 @@
             <child>
               <object class="GtkShortcutsShortcut">
                 <property name="visible">1</property>
-                <property name="accelerator">&lt;ctrl&gt;F1</property>
+                <property name="accelerator">&lt;ctrl&gt;question</property>
                 <property name="title" translatable="yes" context="shortcut window">Keyboard 
shortcuts</property>
               </object>
             </child>