[gimp-web/testing] Fix comma in the summary

[Alexandre Prokoudine <aprokoudine src gnome org>]

commit 8951d8794f724c2f5767b88c7ef6a14e3588925c
Author: Alexandre Prokoudine <alexandre prokoudine gmail com>
Date:   Thu Dec 3 23:47:12 2015 +0300

    Fix comma in the summary

 .../news/2015-12-03 LGM2016 Participation Call.md  |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/content/news/2015-12-03 LGM2016 Participation Call.md b/content/news/2015-12-03 LGM2016 
Participation Call.md
index 658703c..0b79c6d 100644
--- a/content/news/2015-12-03 LGM2016 Participation Call.md     
+++ b/content/news/2015-12-03 LGM2016 Participation Call.md     
@@ -3,7 +3,7 @@ Date: 2015-12-03
 Category: News
 Authors: Alexandre Prokoudine
 Slug: lgm-2016-call-for-participation
-Summary: On April 15—18, Libre Graphics Meeting 2016 conference is taking place in London. We invite you to 
attend it and meet developers of free graphics software, lead a workshop or participate in one.
+Summary: On April 15—18, Libre Graphics Meeting 2016 conference is taking place in London. We invite you to 
attend it and meet developers of free graphics software, lead a workshop, or participate in one.
 
 On April 15—18, the [Libre Graphics Meeting 2016](http://libregraphicsmeeting.org/2016/) conference is 
taking place in London. 
 We invite you to attend and meet developers of free graphics software, lead a workshop, or participate in 
one.