hotfix: 울트라맨육기준님의 요구사항을 적용하였습니다.

src/main/java/com/example/whopper/interfaces/feedback/FeedbackController.java

@@ -66,7 +66,7 @@ public void updateFeedback(@PathVariable String feedbackId, @RequestBody UpdateF
     }
 
     @OnlyTeacher
-    @DeleteMapping
+    @PutMapping
     public void deleteFeedback(@RequestBody IdRequest request) {
         deleteFeedbackUseCase.deleteFeedback(request.id());
     }