fix: 구버전 API Reqeust Topic 수정

dmforu-api/src/main/kotlin/com/dmforu/api/controller/old/request/Topic.kt

@@ -6,25 +6,25 @@ import com.dmforu.domain.Generated
 enum class Topic (val korean: String){
     exam("시험"),
     sign_up("수강"),
-    special_lecture("특강"),
-    seasonal_semester("계절학기"),
-    leave_of_absence("휴학"),
-    return_to_school("복학"),
+    speciallecture("특강"),
+    seasonalsemester("계절학기"),
+    leaveofabsence("휴학"),
+    returntoschool("복학"),
     graduate("졸업"),
-    switch_majors("전과"),
-    giving_up_the_semester("학기포기"),
+    switchmajors("전과"),
+    givingupthesemester("학기포기"),
     scholarship("장학"),
-    national_scholarship("국가장학"),
+    nationalscholarship("국가장학"),
     registration("등록금"),
     employment("채용"),
     contest("공모전"),
     competition("대회"),
-    field_training("현장실습"),
+    fieldtraining("현장실습"),
     volunteer("봉사"),
     dormitory("기숙사"),
     group("동아리"),
-    student_council("학생회"),
-    overseas_training("해외연수"),
-    reserve_forces("예비군"),
+    studentcouncil("학생회"),
+    overseastraining("해외연수"),
+    reserveforces("예비군"),
     work("근로");
 }