[FIX] #50 스터디룸 인원수 로직 수정

Author: lehojun

src/main/java/com/example/be/web/controller/OpenviduController.java

@@ -71,7 +71,7 @@ public ResponseEntity<String> receiveWebhook(@RequestHeader("Authorization") Str
                             Room newRoom = Room.builder()
                                     .title(roomName)
                                     .createDate(createAt)
-                                    .participantCount(roomParticipantCount)
+                                    .participantCount(1)
                                     .maxParticipants(10) // 기본값 설정
                                     .build();
                             roomRepository.save(newRoom);