[gimp-web/testing] Mention support for newer versions of Windows

[Alexandre Prokoudine <aprokoudine src gnome org>]

commit 05631bb2f0738765f188f2c4372fed13465e5878
Author: Alexandre Prokoudine <alexandre prokoudine gmail com>
Date:   Wed Dec 16 03:33:27 2015 +0300

    Mention support for newer versions of Windows

 content/features/index.md |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/content/features/index.md b/content/features/index.md
index 66c9e5b..0fe9d15 100644
--- a/content/features/index.md
+++ b/content/features/index.md
@@ -63,9 +63,9 @@ To save disk space, any format can be saved with an archive extension such as ZI
 
 ## Supported Platforms
 
-*   GNU/Linux (i386, PPC)
-*   Microsoft Windows (XP, Vista)
-*   Mac OS X
+*   GNU/Linux
+*   Microsoft Windows (XP SP3, Vista, 7, 8)
+*   Mac OS X (10.6 and newer)
 *   Sun OpenSolaris
 *   FreeBSD