Add a line before the heading (#2065)

Author: NataliaIvakina

modules/ROOT/pages/clustering/databases.adoc

@@ -642,6 +642,7 @@ If this configuration is not performed, the `seedCredentials` option fails.
 CREATE DATABASE foo OPTIONS { existingData: 'use', seedURI: 's3:/myBucket/myBackup.backup', seedConfig: 'region=eu-west-1', seedCredentials: [accessKey];[secretKey] }
 ----
 Where `accessKey` and `secretKey` are provided by AWS.
+
 ==== Seed provider reference
 
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