[gnome-music] Fix Spanish translation header

[Piotr Drąg <piotrdrag src gnome org>]

commit a7073a1c34677128c80481a5b5d8fd8d54f87d23
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sat Feb 24 00:16:26 2018 +0100

    Fix Spanish translation header

 po/es.po | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/po/es.po b/po/es.po
index 5f5de2a..dd30e87 100644
--- a/po/es.po
+++ b/po/es.po
@@ -3,7 +3,7 @@
 # This file is distributed under the same license as the gnome-music package.
 # FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
 # 
-# Daniel Mustieles <daniel mustieles gmail com>, 2012, 2013, 2014, 2015., 2016, 2017, 2018.
+# Daniel Mustieles <daniel mustieles gmail com>, 2012-2018.
 #
 msgid ""
 msgstr ""