refactor: make HelloControllerITest match maven wildcard pattern

complete/src/test/java/com/example/springboot/HelloControllerIT.java → complete/src/test/java/com/example/springboot/HelloControllerITest.java

@@ -10,7 +10,7 @@
 import static org.assertj.core.api.Assertions.assertThat;
 
 @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
-public class HelloControllerIT {
+public class HelloControllerITest {
 
 	@Autowired
 	private TestRestTemplate template;