docs: add the link to the release doc

Author: merico-devlake

community/maturity.md

@@ -45,7 +45,7 @@ The following table is filled according to the [Apache Maturity Model](https://c
 | **RE20** | The project's PPMC (Project Management Committee, see CS10) approves each software release in order to make the release an act of the Foundation.                      | **YES** All releases have been voted on by the PPMC on dev@devlake.apache.org and general@incubator.apache.org with at least 3 PPMC member votes.                                     |
 | **RE30** | Releases are signed and/or distributed along with digests that anyone can reliably use to validate the downloaded archives.                                            | **YES** All releases are cryptographically signed and include SHA-512 checksums. The [KEYS](https://dist.apache.org/repos/dist/release/incubator/devlake/KEYS) file is available.    |
 | **RE40** | The project can distribute convenience binaries alongside source code, but they are not Apache Releases, they are provided with no guarantee.                          | **YES** Docker images and other convenience binaries are provided but clearly marked as convenience distributions, not official Apache releases.                                        |
-| **RE50** | The project documents a repeatable release process so that someone new to the project can independently generate the complete set of artifacts required for a release. | **TODO** Need to check with community members where the release process documentation is located.                |
+| **RE50** | The project documents a repeatable release process so that someone new to the project can independently generate the complete set of artifacts required for a release. | **YES** The documentation of the release process can be found on [our website](https://devlake.apache.org/docs/DeveloperManuals/Release-SOP/#asf-release-policy).                |
 
 ### Quality