Fix README link

README.md

@@ -4,7 +4,7 @@ Copyright 2012 Khan Academy
 
 The exercise framework is [MIT licensed](http://en.wikipedia.org/wiki/MIT_License).
 
-The exercises are under a [Creative Commons by-nc-sa license](http://en.wikipedia.org/wiki/Creative_Commons_licenses).
+The exercises are under a [Creative Commons by-nc-sa license](http://creativecommons.org/licenses/by-nc-sa/3.0/).
 
 ## Exercise Framework
 
@@ -25,4 +25,4 @@ The process for writing exercises is rather well documented. More information ab
 
 ## More
 
-If you're passionate about creating these exercises and want to apply to be a full-time exercise developer at the Khan Academy, [please do so](http://hire.jobvite.com/CompanyJobs/Careers.aspx?c=qd69Vfw7&page=Job%20Description&j=ohjSVfw7).
+If you're passionate about creating these exercises and want to apply to be a full-time exercise developer at the Khan Academy, [please do so](http://hire.jobvite.com/CompanyJobs/Careers.aspx?c=qd69Vfw7&page=Job%20Description&j=ohjSVfw7).