Reword typedef documentation
Reword typedef documentation

googledatalab/datalab,yebrahim/datalab,yebrahim/datalab,googledatalab/datalab,craigcitro/datalab,yebrahim/datalab,craigcitro/datalab,googledatalab/datalab,parthea/datalab,parthea/datalab,parthea/datalab,parthea/datalab,craigcitro/datalab,craigcitro/datalab,yebrahim/datalab,parthea/datalab,googledatalab/datalab,yebrahim/datalab,googledatalab/datalab,parthea/datalab,googledatalab/datalab,craigcitro/datalab