[gnome-maps] Fix missing contributors in NEWS

[Marcus Lundblad <mlundblad src gnome org>]

commit 12f2f438363f2afce8444ef1b949c86ecac9b5a0
Author: Marcus Lundblad <ml update uu se>
Date:   Mon Apr 16 21:41:50 2018 +0200

    Fix missing contributors in NEWS
    
    Sorry about that, mishap when rebasing before pushing release

 NEWS | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/NEWS b/NEWS
index 6c25166..cb9601b 100644
--- a/NEWS
+++ b/NEWS
@@ -32,12 +32,14 @@ All contributors to this release:
 Anders Jonsson <anders jonsson norsjovallen se>
 Andika Triwidada <atriwidada gnome org>
 Aurimas Černius <aurisc4 gmail com>
+Balázs Meskó <meskobalazs fedoraproject org>
 Charles Monzat <superboa hotmail fr>
 Daniel Șerbănescu <daniel serbanescu dk>
 gogo <trebelnik2 gmail com>
 Justin van Steijn <jvs fsfe org>
 Marcus Lundblad <ml update uu se>
 Marek Cernocky <marek_cernocky conel cz>
+Mario Blättermann <mario blaettermann gmail com>
 Matej Urbančič <mateju svn gnome org>
 Piotr Drąg <piotrdrag gmail com>
 Rafael Fontenelle <rafaelff gnome org>