[gnome-calendar] flatpak: Switch to (Nightly) suffix

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 1ba204540ba2d9e2505153f7d7319ca8efca8b76
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Mon Sep 30 13:12:34 2019 -0300

    flatpak: Switch to (Nightly) suffix

 build-aux/flatpak/org.gnome.Calendar.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/build-aux/flatpak/org.gnome.Calendar.json b/build-aux/flatpak/org.gnome.Calendar.json
index deadb32d..80f815f6 100644
--- a/build-aux/flatpak/org.gnome.Calendar.json
+++ b/build-aux/flatpak/org.gnome.Calendar.json
@@ -7,7 +7,7 @@
     "tags" : [
         "devel"
     ],
-    "desktop-file-name-prefix" : "(Development) ",
+    "desktop-file-name-suffix" : " (Nightly)",
     "finish-args" : [
         "--share=ipc",
         "--share=network",