refactor: description 필드명 변경 누락 (#1277)

refactor: 변경 누락된 applicationDescription 제거

Author: kimsh1017

src/main/java/com/gdschongik/gdsc/domain/event/dto/dto/EventDto.java

@@ -10,7 +10,7 @@ public record EventDto(
         String name,
         String venue,
         LocalDateTime startAt,
-        String applicationDescription,
+        String description,
         Period applicationPeriod,
         UsageStatus regularRoleOnlyStatus,
         UsageStatus afterPartyStatus,