Fix typo for "hear" (was "here").

CONTRIBUTING.md

@@ -52,7 +52,7 @@ If your contribution contains code, please make sure that it follows [the style
 ## Writing a tutorial / case study ##
 
 * Our articles and case studies are licensed under Creative Commons Attribution 3.0 License. Be sure you are OK with that.
-* If one doesn't already exist, [Create a new issue](https://github.com/html5rocks/www.html5rocks.com/issues/new) so others can follow/comment on the progress of your work. **Wait to here from us before you start writing!**
+* If one doesn't already exist, [Create a new issue](https://github.com/html5rocks/www.html5rocks.com/issues/new) so others can follow/comment on the progress of your work. **Wait to hear from us before you start writing!**
 
 ###Authoring process###
 
@@ -78,4 +78,4 @@ A few things to note about internationalization:
 1. All templates need to include the `i18n` library by adding `{% include 'i18n' %}` as early as possible.
 2. UI strings must be wrapped with `{% blocktrans %}` or `{% trans ... %}` tags.  These are well explained in http://docs.djangoproject.com/en/1.2/topics/i18n/.
 3.  Articles live one subdirectory deeper to encode their locale. For example: https://github.com/html5rocks/www.html5rocks.com/tree/master/content/tutorials//3d/css/en/index.html for example.
-4.  Similarly, all case studies live in https://github.com/html5rocks/www.html5rocks.com/tree/master/content/tutorials/casestudies
+4.  Similarly, all case studies live in https://github.com/html5rocks/www.html5rocks.com/tree/master/content/tutorials/casestudies