Update README.md

Author: OpticFusion1

README.md

@@ -210,7 +210,7 @@ To get started, simply fork this repo. Please refer to [CONTRIBUTING.md](CONTRIB
 ## Elixir
 
 - [Building a Simple Chat App With Elixir and Phoenix](https://sheharyar.me/blog/simple-chat-phoenix-elixir/)
-- [How to write a super fast link shortener with Elixir, Phoenix, and Mnesia](https://medium.com/free-code-camp/how-to-write-a-super-fast-link-shortener-with-elixir-phoenix-and-mnesia-70ffa1564b3c)
+- [How to write a super fast link shortener with Elixir, Phoenix, and Mnesia](https://medium.com/free-code-camp/how-to-write-a-super-fast-link-shortener-with-elixir-phoenix-and-mnesia-70ffa1564b3c) - [Source Code](https://github.com/bnchrch/shorten_api_tutorial)
 
 ## Erlang