[gimp-web] Explain how to keep 2.6 in parallel to 2.7, not 2.4

[Sven Neumann <neo src gnome org>]

commit 308b512d3dc750b0782588829dee23a1e2cbfa4c
Author: Sven Neumann <sven gimp org>
Date:   Mon Jun 21 20:58:59 2010 +0200

    Explain how to keep 2.6 in parallel to 2.7, not 2.4

 release-notes/gimp-2.7.htrw |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/release-notes/gimp-2.7.htrw b/release-notes/gimp-2.7.htrw
index 4198fda..b604915 100644
--- a/release-notes/gimp-2.7.htrw
+++ b/release-notes/gimp-2.7.htrw
@@ -197,7 +197,7 @@ If you need to get work done, please use the stable version, GIMP 2.6.
 <h2>Installation</h2>
 <p>
 GIMP 2.7 must <strong>not</strong> be installed in the same prefix as
-other GIMP 2.x versions. If you want to keep your GIMP 2.4
+other GIMP 2.x versions. If you want to keep your GIMP 2.6
 installation in parallel to GIMP 2.7, you have to choose a separate
 installation prefix at compile-time and ensure that you use different
 library search paths for each version. If you do not set up your