[gitg] Fix Spanish translation header

[Piotr Drąg <piotrdrag src gnome org>]

commit 6dfc39fa8d5ed60e07aa8132dac9eff74798a5a7
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Fri Feb 23 23:20:17 2018 +0100

    Fix Spanish translation header

 po/es.po |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/po/es.po b/po/es.po
index 3493758..2b47462 100644
--- a/po/es.po
+++ b/po/es.po
@@ -6,7 +6,7 @@
 # Chihau Chau <chihau gmail com>, 2009.
 # Jorge González <jorgegonz svn gnome org>, 2009, 2010, 2011.
 # 
-# Daniel Mustieles <daniel mustieles gmail com>, 2010, 2011, 2012, 2013, 2014, 2015., 2016.
+# Daniel Mustieles <daniel mustieles gmail com>, 2010-2016.
 #
 msgid ""
 msgstr ""