BAEL-2090 update readme

Author: echeyne

persistence-modules/spring-data-jpa/README.md

@@ -17,6 +17,7 @@
 - [Spring Data – CrudRepository save() Method](https://www.baeldung.com/spring-data-crud-repository-save)
 - [Limiting Query Results with JPA and Spring Data JPA](https://www.baeldung.com/jpa-limit-query-results)
 - [Sorting Query Results with Spring Data](https://www.baeldung.com/spring-data-sorting)
+- [INSERT Statement in JPA](https://www.baeldung.com/jpa-insert)
 
 ### Eclipse Config 
 After importing the project into Eclipse, you may see the following error: