Add roadmap link

Author: tnull

CONTRIBUTING.md

@@ -28,7 +28,7 @@ for help in the `#rust-101` channel on LDK Discord.
 Discussion about code base improvements happens in GitHub issues and on pull
 requests.
 
-Major projects are tracked [here](https://github.com/lightningdevkit/rust-lightning/projects).
+The LDK roadmap is tracked [here](https://github.com/orgs/lightningdevkit/projects/2).
 
 Major milestones are tracked [here](https://github.com/lightningdevkit/rust-lightning/milestones?direction=asc&sort=title&state=open).