[gnome-latex] App: update copyright in about dialog for 2018

[Sébastien Wilmet <swilmet src gnome org>]

commit f42134d9e63f866a5252138bc25dabe12af12dfc
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Mon Mar 12 20:25:50 2018 +0100

    App: update copyright in about dialog for 2018
    
    Almost 10 years, wow!

 src/latexila_app.vala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/latexila_app.vala b/src/latexila_app.vala
index 3ad2d6d..26ec831 100644
--- a/src/latexila_app.vala
+++ b/src/latexila_app.vala
@@ -208,7 +208,7 @@ public class LatexilaApp : Gtk.Application
     {
         string comments =
             _("GNOME LaTeX is a LaTeX editor for the GNOME desktop");
-        string copyright = "Copyright 2009-2017 – Sébastien Wilmet";
+        string copyright = "Copyright 2009-2018 – Sébastien Wilmet";
 
         string website = "https://wiki.gnome.org/Apps/GNOME-LaTeX";;