docs: Update CONTRIBUTING.md

- Add links to roadmap
- Disable links to kanban board (which currently is not in active use)
- Clarify instruction to not submit broken code

CONTRIBUTING.md

@@ -2,33 +2,35 @@
 If you are reading this, you are probably looking for our **[contribution guide]**,
 which is part of our [wiki].
 
-You can find our immediate priorities and their progress on our public [kanban board].
+Also check out our [🚀 Roadmap][roadmap] for information about our priorities and associated tasks.
+<!-- You can find our immediate priorities and their progress on our public [kanban board]. -->
 
 [contribution guide]: https://github.com/Significant-Gravitas/AutoGPT/wiki/Contributing
 [wiki]: https://github.com/Significant-Gravitas/AutoGPT/wiki
+[roadmap]: https://github.com/Significant-Gravitas/AutoGPT/discussions/6971
 [kanban board]: https://github.com/orgs/Significant-Gravitas/projects/1
 
 ## In short
 1. Avoid duplicate work, issues, PRs etc.
 2. We encourage you to collaborate with fellow community members on some of our bigger
-   [todo's][kanban board]!
+   [todo's][roadmap]!
    * We highly recommend to post your idea and discuss it in the [dev channel].
 4. Create a draft PR when starting work on bigger changes.
 3. Please also consider contributing something other than code; see the
    [contribution guide] for options.
 5. Clearly explain your changes when submitting a PR.
-6. Don't submit stuff that's broken.
+6. Don't submit broken code: test/validate your changes.
 7. Avoid making unnecessary changes, especially if they're purely based on your personal
    preferences. Doing so is the maintainers' job. ;-)
 
 [dev channel]: https://discord.com/channels/1092243196446249134/1095817829405704305
 
 If you wish to involve with the project (beyond just contributing PRs), please read the
-wiki [catalyzing](https://github.com/Significant-Gravitas/AutoGPT/wiki/Catalyzing) page.
+wiki page about [Catalyzing](https://github.com/Significant-Gravitas/AutoGPT/wiki/Catalyzing).
 
 In fact, why not just look through the whole wiki (it's only a few pages) and
 hop on our Discord. See you there! :-)
 
-❤️ & 🔆  
-The team @ AutoGPT  
+❤️ & 🔆
+The team @ AutoGPT
 https://discord.gg/autogpt