[3.0] cbd31d0 Fix escaping in regsub docs

[Tollef Fog Heen]

commit cbd31d0e3987608bdb842fc97664ef13e755e4ea
Author: Tollef Fog Heen <tfheen at varnish-software.com>
Date:   Mon Apr 16 14:11:30 2012 +0200

    Fix escaping in regsub docs

diff --git a/doc/sphinx/reference/vcl.rst b/doc/sphinx/reference/vcl.rst
index 212cd2b..927f640 100644
--- a/doc/sphinx/reference/vcl.rst
+++ b/doc/sphinx/reference/vcl.rst
@@ -420,9 +420,9 @@ hash_data(str)
 
 regsub(str, regex, sub)
   Returns a copy of str with the first occurrence of the regular 
-  expression regex replaced with sub. Within sub, \\0 (which can 
-  also be spelled &) is replaced with the entire matched string, 
-  and \n is replaced with the contents of subgroup n in the 
+  expression regex replaced with sub. Within sub, \\0 (which can
+  also be spelled \\&) is replaced with the entire matched string,
+  and \\n is replaced with the contents of subgroup n in the 
   matched string.
 
 regsuball(str, regex, sub)