hotfix: 킹갓제네널슈퍼짱짱6기준님의 요구사항을 적용하였ㅅㅂ니다

src/main/java/com/example/whopper/interfaces/major/MajorController.java

@@ -31,7 +31,7 @@ public DataResponseInfo<MajorEntity> findAll() {
     }
 
     @OnlyTeacher
-    @DeleteMapping
+    @PutMapping
     public void delete(@RequestBody IdRequest request) {
         deleteMajorUseCase.delete(request.id);
     }