[polari] build: Add missing help language

[Florian Müllner <fmuellner src gnome org>]

commit 9d61f004886c71b64710a224fb39bebeddef6f10
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Apr 20 23:55:21 2017 +0200

    build: Add missing help language

 help/meson.build |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/help/meson.build b/help/meson.build
index efc6d62..408b542 100644
--- a/help/meson.build
+++ b/help/meson.build
@@ -12,4 +12,4 @@ gnome.yelp(app_id,
            media: ['images/polari-paste.png',
                    'images/polari-screenshot.png',
                    'images/Polari.png'],
-           languages: ['cs', 'de', 'fr', 'hu', 'pt_BR', 'sv'])
+           languages: ['cs', 'de', 'es', 'fr', 'hu', 'pt_BR', 'sv'])