[3.0] c14a4cd strange wording. typo

[Tollef Fog Heen]

commit c14a4cdbec4db8938b89fe576a70b8cc272fce57
Author: Per Buer <perbu at varnish-software.com>
Date:   Thu Oct 6 11:03:43 2011 +0200

    strange wording. typo

diff --git a/doc/sphinx/index.rst b/doc/sphinx/index.rst
index 6ba912a..019fd3b 100644
--- a/doc/sphinx/index.rst
+++ b/doc/sphinx/index.rst
@@ -5,7 +5,7 @@ Welcome to Varnish's documentation!
 ===================================
 
 Varnish is a state of the art web accelerator. Its mission is to sit
-in front of a web server an cache the content. It makes your web site
+in front of a web server and to cache the content. It makes your web site
 go fast.
 
 We suggest you start by reading the installation guide