fix minor documentation issue
fix minor documentation issue

sean-gilliam/quartznet,zhangjunhao/quartznet,quartznet/quartznet,quartznet/quartznet,sean-gilliam/quartznet,AlonAmsalem/quartznet,huoxudong125/quartznet,sean-gilliam/quartznet,xlgwr/quartznet,andyshao/quartznet,quartznet/quartznet,AndreGleichner/quartznet,RafalSladek/quartznet,quartznet/quartznet,sean-gilliam/quartznet,neuronesb/quartznet,quartznet/quartznet,sean-gilliam/quartznet