Change the description of OpenSearch

Author: siegfriedweber

preview-src/index.adoc

@@ -194,7 +194,7 @@ xref:nifi::index.adoc[Read more]
 <h3>OpenSearch</h3>
 ++++
 
-OpenSearch is a search and analytics suite that makes it easy to ingest, search, visualize, and analyze data.
+OpenSearch is a powerful search and analytics engine built on Apache Lucene.
 
 xref:opensearch::index.adoc[Read more]