Made improvements to CONTRIBUTING.md (#791)

CONTRIBUTING.md

@@ -3,18 +3,21 @@
 Thank you for your interest in contributing to Openverse! This document is
 a set of guidelines to help you contribute to this project.
 
+Please refer to [CONTRIBUTING.md](https://github.com/WordPress/openverse/blob/main/CONTRIBUTING.md) for a
+detailed understanding of the contribution guidelines.
+
 ## Code of Conduct
 
 By participating in this project, you are expected to uphold our [Code of
 Conduct](./CODE_OF_CONDUCT.md).
 
 ## Project Documentation
 
-The `README` in the root of the repository should contain or link to
+The [README](./README.md) in the root of the repository should contain or link to
 project documentation. If you cannot find the documentation you're
 looking for, please file a GitHub issue with details of what
 you'd like to see documented.
 
 ## Questions or Thoughts?
 
-Feel free to [join us on Slack](https://make.wordpress.org/chat/) and discuss the project with the engineers and community members on #openverse. We also use [GitHub discussions](https://github.com/WordPress/openverse-api/discussions) for feature requests, troubleshooting, and other 'off-topic' conversations.
+Feel free to [join us on Slack](https://make.wordpress.org/chat/) and discuss the project with the engineers and community members on #openverse.