fix response `content-type` is not set if access without access token

Kairlec

2023-05-15 ca103731c721aae3f5f622e58c679ed5c09fd9e9

 src/main/java/com/genersoft/iot/vmp/media/zlm/dto/hook/HookResult.java

@@ -18,6 +18,10 @@
        return new HookResult(0, "success");
    }

    public static HookResult Fail(){
        return new HookResult(-1, "fail");
    }

    public int getCode() {
        return code;
    }