Fix link to 'Mocking ajax' page on main Jasmine site

Author: koralcem

README.markdown

@@ -1,7 +1,7 @@
 [![Build Status](https://travis-ci.org/jasmine/jasmine-ajax.png?branch=master)](https://travis-ci.org/jasmine/jasmine-ajax)
 [![Code Climate](https://codeclimate.com/github/jasmine/jasmine-ajax/badges/gpa.svg)](https://codeclimate.com/github/jasmine/jasmine-ajax)
 
-If you are using the updated version of this library, there is some additional documentation located at [jasmine.github.io](http://jasmine.github.io/edge/ajax.html) that is up-to-date.
+If you are using the updated version of this library, there is some additional documentation located at [jasmine.github.io](https://jasmine.github.io/tutorials/mocking_ajax) that is up-to-date.
 
 jasmine-ajax - Faking Ajax responses in your Jasmine suite.
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