[gtk+] demo: Make sure to add gtk3-demo.desktop to tarball

[Rico Tzschichholz <ricotz src gnome org>]

commit e2ab11ac6ee800097e74fd31979629b8f78a3dee
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Thu Nov 7 18:28:23 2013 +0100

    demo: Make sure to add gtk3-demo.desktop to tarball
    
    In addition to fc71414ada5b270a4c6c9775225f5cdc5d303f63

 demos/gtk-demo/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/demos/gtk-demo/Makefile.am b/demos/gtk-demo/Makefile.am
index cbfabeb..7a55553 100644
--- a/demos/gtk-demo/Makefile.am
+++ b/demos/gtk-demo/Makefile.am
@@ -74,7 +74,7 @@ LDADDS = \
 bin_PROGRAMS = gtk3-demo gtk3-demo-application
 
 desktopdir = $(datadir)/applications
-desktop_DATA = gtk3-demo.desktop
+dist_desktop_DATA = gtk3-demo.desktop
 
 BUILT_SOURCES = demos.h demo_resources.c