Add link to review guideline fro contributors

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index a7bf198..3a8c5c6 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -24,7 +24,7 @@
 1. [Check for open issues](https://github.com/Mbed-TLS/mbedtls/issues) or [start a discussion](https://lists.trustedfirmware.org/mailman3/lists/mbed-tls.lists.trustedfirmware.org) around a feature idea or a bug.
 1. Fork the [Mbed TLS repository on GitHub](https://github.com/Mbed-TLS/mbedtls) to start making your changes. As a general rule, you should use the ["development" branch](https://github.com/Mbed-TLS/mbedtls/tree/development) as a basis.
 1. Write a test which shows that the bug was fixed or that the feature works as expected.
-1. Send a pull request (PR) and work with us until it gets merged and published. Contributions may need some modifications, so a few rounds of review and fixing may be necessary. We will include your name in the ChangeLog :)
+1. Send a pull request (PR) and work with us until it gets merged and published. Contributions may need some modifications, so a few rounds of review and fixing may be necessary. See our [review process guidelines](https://mbed-tls.readthedocs.io/en/latest/reviews/review-for-contributors/).
 1. For quick merging, the contribution should be short, and concentrated on a single feature or topic. The larger the contribution is, the longer it would take to review it and merge it.
 
 Backwards Compatibility