Fix URL to Egghead course "The Beginner's Guide to React" (reactjs#3526)

Author: iNishant

content/community/courses.md

@@ -18,7 +18,7 @@ permalink: community/courses.html
 
 - [Frontend Armory: React Fundamentals](https://frontarm.com/courses/react-fundamentals/) - Learn React without the buzzwords.
 
-- [Egghead.io: The Beginner's Guide to ReactJS](https://egghead.io/courses/the-beginner-s-guide-to-reactjs) - Free course for React newbies and those looking to get a better understanding of React fundamentals.
+- [Egghead.io: The Beginner's Guide to ReactJS](https://egghead.io/courses/the-beginner-s-guide-to-react) - Free course for React newbies and those looking to get a better understanding of React fundamentals.
 
 - [Free React Bootcamp](https://tylermcginnis.com/free-react-bootcamp/) - Recordings from three days of a free online React bootcamp.