[gnome-boxes] desktop: Add VNC MimeType

[Felipe Borges <felipeborges src gnome org>]

commit 00ee9bbc5cb0e4505049820bd87ce575e5a08667
Author: Matt Harris <matth281 outlook com>
Date:   Wed Jun 27 13:42:56 2018 +0100

    desktop: Add VNC MimeType
    
    This way Boxes can be the default handler for VNC links.
    
    Fixes #213

 data/org.gnome.Boxes.desktop.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/data/org.gnome.Boxes.desktop.in b/data/org.gnome.Boxes.desktop.in
index 265585e8..914a09fa 100644
--- a/data/org.gnome.Boxes.desktop.in
+++ b/data/org.gnome.Boxes.desktop.in
@@ -11,5 +11,5 @@ Terminal=false
 Type=Application
 StartupNotify=true
 Categories=GNOME;GTK;System;
-MimeType=application/x-cd-image;
+MimeType=application/x-cd-image;x-scheme-handler/vnc;
 DBusActivatable=true