fix : JsonValue 추가

Author: Hoyoung027

src/main/java/ceos/backend/domain/application/domain/AvailableCheck.java

@@ -3,6 +3,8 @@
 import ceos.backend.domain.application.exception.exceptions.InvalidAvailableCheck;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import java.util.stream.Stream;
+
+import com.fasterxml.jackson.annotation.JsonValue;
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
 
@@ -13,7 +15,7 @@ public enum AvailableCheck {
     AVAILABLE("가능"),
     UNAVAILABLE("불가능");
 
-    private final String check;
+    @JsonValue private final String check;
 
     @JsonCreator
     public static AvailableCheck parsing(String inputValue) {