Release documentation: Add URL to Gerrit artifacts on Maven Central

Released artifacts first appear in the Sonatype releases repository
and are only then replicated to Maven Central. Clarify this in the
release documentation.

Change-Id: Ie50a41685222a4423d9fde727e5af29691ca2c8d
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>
diff --git a/Documentation/dev-release.txt b/Documentation/dev-release.txt
index bcb0b0f..e966899 100644
--- a/Documentation/dev-release.txt
+++ b/Documentation/dev-release.txt
@@ -274,11 +274,13 @@
 link:https://oss.sonatype.org/[Sonatype Nexus Server], select it and
 click on `Release`.
 
+** The released artifacts are available in
+https://oss.sonatype.org/content/repositories/releases/com/google/gerrit/
+
 ** It may take up to 2 hours until the artifacts appear on Maven
 Central:
 +
-https://oss.sonatype.org/content/repositories/releases/com/google/gerrit/
-
+http://central.maven.org/maven2/com/google/gerrit/
 
 [[push-stable]]
 ==== Push the Stable Branch