[sysprof] app: update copyright in about dialog

[Christian Hergert <chergert src gnome org>]

commit ad991ef7e7c506696f4181483a6c13aae61ab698
Author: Christian Hergert <chergert redhat com>
Date:   Fri Oct 12 17:14:13 2018 -0700

    app: update copyright in about dialog

 src/sp-application.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/sp-application.c b/src/sp-application.c
index 280960c..b7f39e0 100644
--- a/src/sp-application.c
+++ b/src/sp-application.c
@@ -172,7 +172,7 @@ sysprof_about (GSimpleAction *action,
                          "artists", sysprof_artists,
                          "comments", _("A system profiler"),
                          "copyright", "Copyright © 2004-2009 Søren Sandmann Pedersen\n"
-                                      "Copyright © 2016 Christian Hergert",
+                                      "Copyright © 2016-2018 Christian Hergert",
                          "transient-for", best_toplevel,
                          "modal", TRUE,
                          "translator-credits", _("translator-credits"),