moved OSIV examples from spring-data-jpa-3 to spring-data-jpa-4

persistence-modules/spring-data-jpa-3/src/main/java/com/baeldung/Application.java

@@ -2,8 +2,10 @@ package com.baeldung;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
 
 @SpringBootApplication
+@EnableJpaRepositories
 public class Application {
 
     public static void main(String[] args) {