[3.0] 5365096 add a label so we can ref this in the user guide / tutorial

[Tollef Fog Heen]

commit 5365096cdde6406af402228654f668b8764d7352
Author: Per Buer <perbu at varnish-software.com>
Date:   Mon Dec 19 11:24:42 2011 +0100

    add a label so we can ref this in the user guide / tutorial

diff --git a/doc/sphinx/reference/varnishlog.rst b/doc/sphinx/reference/varnishlog.rst
index be9c9c5..edd8fbc 100644
--- a/doc/sphinx/reference/varnishlog.rst
+++ b/doc/sphinx/reference/varnishlog.rst
@@ -1,3 +1,5 @@
+_reference-varnishlog:
+
 ==========
 varnishlog
 ==========