docs: Update CONTRIBUTING.md

- Add reference to Code Guidelines
- Reorder list of directives to more logical order

CONTRIBUTING.md

@@ -1,5 +1,5 @@
 # AutoGPT Contribution Guide
-If you are reading this, you are probably looking for our **[contribution guide]**,
+If you are reading this, you are probably looking for the full **[contribution guide]**,
 which is part of our [wiki].
 
 Also check out our [🚀 Roadmap][roadmap] for information about our priorities and associated tasks.
@@ -15,15 +15,17 @@ Also check out our [🚀 Roadmap][roadmap] for information about our priorities
 2. We encourage you to collaborate with fellow community members on some of our bigger
    [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.
+3. Create a draft PR when starting work on bigger changes.
+4. Adhere to the [Code Guidelines]
 5. Clearly explain your changes when submitting a PR.
 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. ;-)
+8. Please also consider contributing something other than code; see the
+   [contribution guide] for options.
 
 [dev channel]: https://discord.com/channels/1092243196446249134/1095817829405704305
+[code guidelines]: https://github.com/Significant-Gravitas/AutoGPT/wiki/Contributing#code-guidelines
 
 If you wish to involve with the project (beyond just contributing PRs), please read the
 wiki page about [Catalyzing](https://github.com/Significant-Gravitas/AutoGPT/wiki/Catalyzing).