fix next quizz

src/main/java/fr/louis/projetprogreseau/quizz/DefaultQuiz.java

@@ -38,7 +38,7 @@ public class DefaultQuiz {
     }
 
     public static Quiz next(int actualQuizz){
-        return QUIZ_LIST.get(actualQuizz);
+        return QUIZ_LIST.get(actualQuizz + 1);
     }
 
 }