[fix] 내 팜클럽 상세조회 오류 수정

src/main/java/com/modernfarmer/farmusspring/domain/farmclub/repository/FarmClubRepositoryImpl.java

@@ -90,7 +90,7 @@ public GetMyFarmClubVo findMyFarmClub(Long farmClubId, Long userId) {
                 .select(farmClub.startedAt)
                 .from(userFarmClub)
                 .join(userFarmClub.farmClub, farmClub)
-                .where(userFarmClub.userId.eq(userId))
+                .where(userFarmClub.userId.eq(userId).and(userFarmClub.farmClub.id.eq(farmClubId)))
                 .fetchOne();
 
         log.info("userFarmClubCount: {}", userFarmClubCount);