Merge pull request #2786 from justinh-rahb/contributing-update

docs: add line re: keeping PRs open

docs/CONTRIBUTING.md

@@ -45,6 +45,7 @@ We welcome pull requests. Before submitting one, please:
 2. Follow the project's coding standards and include tests for new features.
 3. Update documentation as necessary.
 4. Write clear, descriptive commit messages.
+5. It's essential to complete your pull request in a timely manner. We move fast, and having PRs hang around too long is not feasible. If you can't get it done within a reasonable time frame, we may have to close it to keep the project moving forward.
 
 ### 📚 Documentation & Tutorials