Alphabetize Web Development section

free-courses-en.md

@@ -154,6 +154,6 @@
 
 
 ### Web Development
+* [Discover Flask - Full Stack Web Development with Flask](https://github.com/realpython/discover-flask)
 * [The Odin Project - Learn Web Development for Free](http://www.theodinproject.com/)
 * [Udacity Web Development Course Catalog](https://www.udacity.com/courses#!/web-development)
-* [Discover Flask - Full Stack Web Development with Flask](https://github.com/realpython/discover-flask)