fix: room에서 import record 경로 수정

Author: KSH0326

src/main/java/com/back/domain/studyroom/entity/Room.java

@@ -1,6 +1,6 @@
 package com.back.domain.studyroom.entity;
 
-import com.back.domain.study.entity.StudyRecord;
+import com.back.domain.study.record.entity.StudyRecord;
 import com.back.domain.user.entity.User;
 import com.back.global.entity.BaseEntity;
 import jakarta.persistence.*;