fix: send categorie in creation quiz

src/app/modules/home/form-quiz/form-create-quiz/form-create-quiz.component.ts

@@ -45,7 +45,7 @@ export class FormCreateQuizComponent implements OnInit {
                     const categories = this.form.value.category;
                     const difficulty = this.form.value.difficulty;
                     const NbQuestion = this.form.value.nbQuestion;
-                    this.questionService.createQuiz(NbQuestion, categories.id, difficulty).subscribe({
+                    this.questionService.createQuiz(NbQuestion, Number(categories), difficulty).subscribe({
                         next: (data: any) => {
                             this.router.navigate(['/play-quiz'], { queryParams: { idQuiz: data.id } });
                         },