README: sandbox: Change reference to sandbox details

doc/arch/index.rst is a list of links to each architecture.
As for the sandbox details, doc/arch/sandbox.rst looks better.

Signed-off-by: Naoki Hayama <naoki.hayama@lineo.co.jp>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/README b/README
index 8c2068e486ba0d4b59797ecc9a8182af49dae525..377e6aa4510e0d6aabb1277bea42d9d2d47df8c2 100644 (file)
--- a/README
+++ b/README
@@ -210,7 +210,7 @@ board. This allows feature development which is not board- or architecture-
 specific to be undertaken on a native platform. The sandbox is also used to
 run some of U-Boot's tests.
 
-See doc/arch/index.rst for more details.
+See doc/arch/sandbox.rst for more details.
 
 
 Board Initialisation Flow: