docs: add ready-to-code issue link

Signed-off-by: Dharit Shah <dhshah@redhat.com>

Author: dhshah13

CONTRIBUTING.md

@@ -91,6 +91,8 @@ ADR filenames use a four-digit number (`NNNN-short-description.md`). When multip
 
 When in doubt about whether something warrants a PR, start with an issue. Issues are low-friction and can graduate into PRs, problem docs, or ADRs later.
 
+To find issues ready for contribution, use the [ready-to-code open issues search](https://github.com/fullsend-ai/fullsend/issues?q=is%3Aissue%20is%3Aopen%20-author%3Aapp%2Ffullsend-ai-coder%20-author%3Aapp%2Ffullsend-ai-retro%20-label%3Aready-to-code).
+
 ## License
 
 All contributions to this project are made under the [Apache License, Version 2.0](LICENSE). By submitting a pull request, you agree that your contributions will be licensed under this license.