Adds some additional instructions for checking Maven artifacts (#5838)

Adds some additional instructions for checking Maven artifacts and moves the further details section to the bottom.

Signed-off-by: David Venable <dlv@amazon.com>

Author: dlvenable

RELEASING.md

@@ -176,11 +176,7 @@ After two maintainers approve the GitHub issue, the [OpenSearch CI server](https
 This is a Jenkins server that promotes our releases. 
 You can check the promotion status by checking the [release-data-prepper](https://build.ci.opensearch.org/job/release-data-prepper/) job.
 
-### Further details
-
-For more details on the release build, or to setup your own GitHub repository, see [release/README.md](release/README.md).
-
-
+You can also check the Maven artifacts after the promote stage completes by viewing the [AWS Sonatype repository](https://aws.oss.sonatype.org/content/repositories/releases/org/opensearch/dataprepper/).
 
 ## <a name="post-release">Post release</a>
 
@@ -204,3 +200,8 @@ Steps:
 * Find the milestone for the release.
 * Make sure there are no issues. If there are any triage them by closing, or changing the milestone.
 * Click the "Close" button
+
+
+### Further details
+
+For more details on the release build, or to setup your own GitHub repository, see [release/README.md](release/README.md).