fix: 오류 수정

Author: HuitaePark

src/main/java/com/waitit/capstone/domain/image/ImageService.java

@@ -90,6 +90,6 @@ public PageResponse<AllImageResponse> getAllImage(Pageable pageable){
     }
     public String getImgPath(Long id){
       EventImage eventImage =  eventImageRepository.findById(id).orElseThrow(()->new IllegalArgumentException("없는 이미지 입니다."));
-      return eventImage.getImgPath();
+      return eventImage.getImagePath();
     }
 }