[library-web] gtk+ was renamed to gtk

[Andrea Veri <averi src gnome org>]

commit 34e8edbff7e19d2bda0d6f1e0056bbb821bb2eed
Author: Andrea Veri <averi redhat com>
Date:   Thu May 9 21:32:03 2019 +0200

    gtk+ was renamed to gtk

 data/extra-tarballs | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/data/extra-tarballs b/data/extra-tarballs
index bcb9dd7..e91397e 100644
--- a/data/extra-tarballs
+++ b/data/extra-tarballs
@@ -18,6 +18,7 @@ gnome://pygobject?min=2.14
 # (McCann changes to the modulesets are not handled by library-web), so we
 # force them here
 gnome://gtk+?min=2.24
+gnome://gtk
 gnome://glib?min=2.28
 # atk 2.12 is missing from stable modulesets, makes sure it gets included
 gnome://atk?min=2.12