[master] a502bae Use american english

[Lasse Karstensen]

commit a502bae63c0f3b1d4c26c8108bc964369d85458d
Author: Lasse Karstensen <lasse at varnish-software.com>
Date:   Fri Feb 24 11:08:31 2012 +0100

    Use american english

diff --git a/doc/sphinx/tutorial/index.rst b/doc/sphinx/tutorial/index.rst
index c3a05f5..c8eb2c2 100644
--- a/doc/sphinx/tutorial/index.rst
+++ b/doc/sphinx/tutorial/index.rst
@@ -28,7 +28,7 @@ separate topic. Good luck.
 	purging
 	compression
 	esi
-	virtualised
+	virtualized
 	advanced_backend_servers
         handling_misbehaving_servers
         advanced_topics