message: fix return wrong duration value
  Fix return wrong duration value in `getMosaic`
diff: @@ -75,7 +75,7 @@ export class MosaicHttp extends Http implements MosaicRepository {
  divisibility = mosaicInfoDTO.mosaic.properties[MosaicPropertyType.Divisibility].value;
  }
  if (mosaicInfoDTO.mosaic.properties[MosaicPropertyType.Duration].value) {
  - duration = mosaicInfoDTO.mosaic.properties[MosaicPropertyType.Divisibility].value;
  + duration = mosaicInfoDTO.mosaic.properties[MosaicPropertyType.Duration].value;
  }
  return new MosaicInfo(
  mosaicInfoDTO.meta.id,
  