Update CONTRIBUTING.md

Co-authored-by: Li Nguyen <[email protected]>
Signed-off-by: Jo Stichbury <[email protected]>

CONTRIBUTING.md

@@ -1,6 +1,6 @@
 # Contributing guidelines
 
 Contributions of all experience levels are welcome! If you're interested in making a contribution,
-please refer to our [Contributing Guide](https://github.com/mckinsey/vizro/blob/main/vizro-core/docs/pages/explanation/contributing.md) for more information.
+please refer to our [Contributing Guide](https://vizro.readthedocs.io/en/stable/pages/explanation/contributing/) for more information.
 
 The easiest way to get up and running quickly is to [open the repository in GitHub Codespaces](https://github.com/codespaces/new?hide_repo_select=true&ref=main&repo=626855142). This will create a temporary development environment with all the necessary configurations, making it especially convenient for tasks like reviewing pull requests.