gnu: openjpeg: update home page URL.

* gnu/packages/image.scm (openjpeg)[home-page]: Update URL.

gnu/packages/image.scm

@@ -2,6 +2,7 @@
 ;;; Copyright © 2013 Andreas Enge <andreas@enge.fr>
 ;;; Copyright © 2014 Mark H Weaver <mhw@netris.org>
 ;;; Copyright © 2014 Alex Kost <alezost@gmail.com>
+;;; Copyright © 2014 Ricardo Wurmus <rekado@elephly.net>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -217,7 +218,7 @@ (define-public openjpeg
 development, among them the JP2 and MJ2 (Motion JPEG 2000) file formats,
 an indexing tool useful for the JPIP protocol, JPWL-tools for
 error-resilience, a Java-viewer for j2k-images, ...")
-    (home-page "http://jbig2dec.sourceforge.net/")
+    (home-page "https://code.google.com/p/openjpeg/")
     (license license:bsd-2)))
 
 (define-public giflib