update bad link (cherry picked from commit 7461299)

Steve Piercy

2016-04-24 bfe2dfaa6ca7326cbc8118f65563b259643ba44d

update bad link
(cherry picked from commit 7461299)

 docs/narr/sessions.rst

@@ -305,7 +305,7 @@
---------------------------------------------

`Cross-site request forgery
<http://en.wikipedia.org/wiki/Cross-site_request_forgery>`_ attacks are a
<https://en.wikipedia.org/wiki/Cross-site_request_forgery>`_ attacks are a
phenomenon whereby a user who is logged in to your website might inadvertantly
load a URL because it is linked from, or embedded in, an attacker's website.
If the URL is one that may modify or delete data, the consequences can be dire.