[6.0] 5cde1b151 fix status code typo

[Dridi Boukelmoune]

commit 5cde1b15103196f673272e4c3e9a9c4dfa509755
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Tue Apr 17 08:14:29 2018 +0200

    fix status code typo
    
    Thank you to @martin-uplex for the review

diff --git a/doc/sphinx/users-guide/vcl-built-in-subs.rst b/doc/sphinx/users-guide/vcl-built-in-subs.rst
index d8c9861bd..690f337ef 100644
--- a/doc/sphinx/users-guide/vcl-built-in-subs.rst
+++ b/doc/sphinx/users-guide/vcl-built-in-subs.rst
@@ -440,7 +440,7 @@ based on the response status and the response headers ``Age``,
 * If present and valid, the value of the ``Age`` header is effectively
   deduced from all ttl calculations.
 
-* For status codes 200, 203, 204, 300, 401, 304, 404, 410 and 414:
+* For status codes 200, 203, 204, 300, 301, 304, 404, 410 and 414:
 
   * If ``Cache-Control`` contains an ``s-maxage`` or ``max-age`` field
     (in that order of preference), the ttl is set to the respective