- What I did

	Removed broken link in #937
- How I did it
	Removed first section of CONTRIBUTING.md
- How to verify it
	Check CONTRIBUTING.md
- Description for the changelog
	Removed broken link in contributing to Docker documentation.
A picture of a cute animal (not mandatory but encouraged)
Closes #937

Signed-off-by: achneerov <achneerov@gmail.com>

Author: achneerov

CONTRIBUTING.md

@@ -1,9 +1,5 @@
 # Contributing to Docker
 
-Want to hack on Docker? Awesome!  We have a contributor's guide that explains
-[setting up a Docker development environment and the contribution
-process](https://docs.docker.com/opensource/project/who-written-for/). 
-
 This page contains information about reporting issues as well as some tips and
 guidelines useful to experienced open source contributors. Finally, make sure
 you read our [community guidelines](#docker-community-guidelines) before you