Update README.md

Author: witold-swierzy

data-platform/autonomous-database/autonomous-json/oracle23ai-json-views-support/README.md

@@ -7,6 +7,7 @@ This repository contains scripts demonstrating support for Oracle JSON views in
 - mongosh installed
 - SQL Cl installed
 - Oracle Database 23ai with Oracle API for MongoDB enabled
+- HR database sample schema installed
 
 ## License