[6.0] 81c726aec Document the link between varnishd -l and -p

[Dridi Boukelmoune]

commit 81c726aec60ecf758b8df7eadb2a4d3f0e124c1d
Author: Dridi Boukelmoune <dridi.boukelmoune at gmail.com>
Date:   Tue Jan 22 08:33:48 2019 +0100

    Document the link between varnishd -l and -p

diff --git a/doc/sphinx/reference/varnishd.rst b/doc/sphinx/reference/varnishd.rst
index 57c657711..9f6f8fb77 100644
--- a/doc/sphinx/reference/varnishd.rst
+++ b/doc/sphinx/reference/varnishd.rst
@@ -207,9 +207,9 @@ Tuning options
 
 -l <vsl>
 
-  Specifies size of the space for the VSL records.
-  Scaling suffixes like 'K' and 'M' can be used up to (G)igabytes.
-  Default is 80 Megabytes.
+  Specifies size of the space for the VSL records, shorthand for
+  ``-p vsl_space=<vsl>``. Scaling suffixes like 'K' and 'M' can be
+  used up to (G)igabytes. See `vsl_space`_ for more information.
 
 Security options
 ----------------