fix automatic build of documentation
fix automatic build of documentation

machinekit/machinetalk-protobuf,machinekit/machinetalk-protobuf,machinekit/machinetalk-protobuf,mhaberler/machinetalk-protobuf,mhaberler/machinetalk-protobuf,mhaberler/machinetalk-protobuf,strahlex/machinetalk-protobuf,machinekit/machinetalk-protobuf,mhaberler/machinetalk-protobuf,strahlex/machinetalk-protobuf