Fix punctuation

stomar · stomar · commit f274437ab57a · 2015-11-18T14:10:43.000+01:00
diff --git a/en/news/_posts/2015-10-13-fukuoka-ruby-award-2016.md b/en/news/_posts/2015-10-13-fukuoka-ruby-award-2016.md
@@ -58,4 +58,4 @@ The winner of the IIJ GIO Prize will receive:
 "Matz will be testing and reviewing your source code thoroughly, so it's very
 meaningful to apply! The competition is free to enter."
 
-Cheers,
+Cheers!
