fix : naming

Author: lkw9241

src/main/java/com/back/domain/cocktail/service/CocktailService.java

@@ -20,7 +20,7 @@ public class CocktailService {
     private static final int DEFAULT_SIZE = 20;
 
     @Transactional(readOnly = true)
-    public Cocktail findById(Long id) {
+    public Cocktail getCocktailById(Long id) {
         return cocktailRepository.findById(id)
                 .orElseThrow(() -> new IllegalArgumentException("User not found. id=" + id));
     }

src/main/java/com/back/global/init/DevInitData.java

@@ -48,7 +48,7 @@ public void cocktailInit() {
                     .build());
         }
         System.out.println("DevInitData: 테스트 칵테일 20개 삽입");
-        System.out.println(cocktailService.findById(1l));
+        System.out.println(cocktailService.getCocktailById(1l));
     }
 }