[4.0] 49bbb95 Fix reference

[Lasse Karstensen]

commit 49bbb954131c8acea7c631dbae711d39d03b0eb5
Author: Federico G. Schwindt <fgsch at lodoss.net>
Date:   Thu Sep 11 13:24:24 2014 +0100

    Fix reference
    
    Spotted by:	Dridi Boukelmoune

diff --git a/doc/sphinx/tutorial/now_what.rst b/doc/sphinx/tutorial/now_what.rst
index 1e23e10..90e28f4 100644
--- a/doc/sphinx/tutorial/now_what.rst
+++ b/doc/sphinx/tutorial/now_what.rst
@@ -7,5 +7,5 @@ Now what?
 You've read through the tutorial. You should have Varnish up and
 running. You should know about the logs and you should have a rough
 idea of what VCL is. Next, you might want to have a look at
-:ref:``users-guide-index``, where we go through the features of
+:ref:`users-guide-index`, where we go through the features of
 Varnish in more detail.