Fix README.rst format

One place in README.rst isn't formatted as I expected. Try to fix.

-
>From 460a3b5965056bcf4d7762e01f0083f328db45e6 Mon Sep 17 00:00:00 2001
From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Date: Tue, 19 Jun 2012 11:31:56 +0900
Subject: [PATCH] Fix README.rst format

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>

README.rst

@@ -32,10 +32,9 @@ You can create tens of thousands of isolated virtual networks without
 using VLAN.  The Ryu application is included in OpenStack mainline as
 of Essex release.
 
-If you want to run your Ryu application, Let's start with
-`a simple example
- <https://github.com/osrg/ryu/blob/master/ryu/app/simple_switch.py>`_.
-Just type::
+If you want to run your Ryu application, have a look at
+`a simple example <https://github.com/osrg/ryu/blob/master/ryu/app/simple_switch.py>`_.
+After writing your application, just type::
 
    % ryu-manager yourapp.py