Updated the learn.jquery.com URL

Author: mohnish

layouts/article_footer.html

@@ -6,7 +6,7 @@ <h3 class="author">By <a href="<%= @item[:github_user]["html_url"] %>"><%= @item
 	<div class="feedback">
 		<h4>Suggestions? Problems? Feedback?</h4>
 		You can open an issue or submit a pull request for
-		<a target="_blank" href="https://github.com/jquery/web-learn-jquery-com/blob/master/content/<%= @item.identifier.slice(1..-2) %>.md">
+		<a target="_blank" href="https://github.com/jquery/learn.jquery.com/blob/master/content/<%= @item.identifier.slice(1..-2) %>.md">
 			this article on GitHub
 		</a>
 		<a href="#">(Help!)</a>