Fix minor typo in the documentation - third party tutorial

CONTRIBUTORS.rst

@@ -593,6 +593,7 @@ Contributors
 * Rishank Kanaparti
 * Daniel Kirkham
 * Luz Paz
+* Simon Krull
 
 Translators
 ===========

docs/advanced_topics/third_party_tutorials.md

@@ -86,7 +86,7 @@ the latest Wagtail versions.
 -   [Working With Wagtail: Menus](https://www.tivix.com/blog/working-with-wagtail-menus/) (22 January 2015)
 -   [Upgrading Wagtail to use Django 1.7 locally using vagrant](https://jossingram.wordpress.com/2014/12/10/upgrading-wagtail-to-use-django-1-7-locally-using-vagrant/) (10 December 2014)
 -   [Wagtail redirect page. Can link to page, URL and document](https://gist.github.com/alej0varas/e7e334643ceab6e65744) (24 September 2014)
--   [Outputing JSON for a model with properties and db fields in Wagtail/Django](https://jossingram.wordpress.com/2014/09/24/outputing-json-for-a-model-with-properties-and-db-fields-in-wagtaildjango/) (24 September 2014)
+-   [Outputting JSON for a model with properties and db fields in Wagtail/Django](https://jossingram.wordpress.com/2014/09/24/outputing-json-for-a-model-with-properties-and-db-fields-in-wagtaildjango/) (24 September 2014)
 -   [Bi-lingual website using Wagtail CMS](https://jossingram.wordpress.com/2014/09/17/bi-lingual-website-using-wagtail-cms/) (17 September 2014)
 -   [Wagtail CMS -- Lesser known features](https://jossingram.wordpress.com/2014/09/12/wagtail-cms-lesser-known-features/) (12 September 2014)
 -   [Wagtail notes: stateful on/off hallo.js plugins](https://www.coactivate.org/projects/ejucovy/blog/2014/08/09/wagtail-notes-stateful-onoff-hallojs-plugins/) (9 August 2014)