chore: Update CONTRIBUTING.md

CONTRIBUTING.md

@@ -4,6 +4,11 @@ Thank you for considering contributing to Medusa! This document will outline how
 
 If you're contributing to our documentation, make sure to also check out the [contribution guidelines on our documentation website](https://docs.medusajs.com/contribution-guidelines).
 
+### Important
+Our core maintainers prioritize pull requests (PRs) from within our organization. External contributions are regularly triaged, but not at any fixed cadence. It varies depending on how busy the maintainers are. This is applicable to all types of PRs, so we kindly ask for your patience.
+
+If you, as a community contributor, wish to work on more extensive features, please reach out to CODEOWNERS instead of directly submitting a PR with all the changes. This approach saves us both time, especially if the PR is not accepted (which will be the case if it does not align with our roadmap), and helps us effectively review and evaluate your contribution if it is accepted.
+
 ## Prerequisites
 
 - **You're familiar with GitHub Issues and Pull Requests**
@@ -66,4 +71,4 @@ Check out our [local development documentation](https://docs.medusajs.com/usage/
 
 ### Release
 
-The Medusa team will regularly create releases from the develop branch.
+The Medusa team will regularly create releases from the develop branch.