No need to make command line runner public

TUTORIAL.md

@@ -89,7 +89,7 @@ import org.springframework.stereotype.Component;
 import java.util.stream.Stream;
 
 @Component
-public class BeerCommandLineRunner implements CommandLineRunner {
+class BeerCommandLineRunner implements CommandLineRunner {
     private final BeerRepository repository;
 
     public BeerCommandLineRunner(BeerRepository repository) {