[master] 2c41d0d Add a ref to VMOD purge from the reference index page.

[Geoff Simmons]

commit 2c41d0de87b236ec348c3705a4611ba2b23d6644
Author: Geoff Simmons <geoff at uplex.de>
Date:   Mon Sep 4 14:50:02 2017 +0200

    Add a ref to VMOD purge from the reference index page.

diff --git a/doc/sphinx/reference/index.rst b/doc/sphinx/reference/index.rst
index 936b3a7..e1164f8 100644
--- a/doc/sphinx/reference/index.rst
+++ b/doc/sphinx/reference/index.rst
@@ -23,6 +23,7 @@ The Varnish Reference Manual
 	vmod_std.generated.rst
 	vmod_directors.generated.rst
 	vmod_vtc.generated.rst
+	vmod_purge.generated.rst
 	directors.rst
 	varnish-counters.rst
 	vsl.rst