Fix capitalisation in docs (#290)
Fix capitalisation in docs (#290)

When trying to import ´LinemarkSeries` instead of `LineMarkSeries`, it will give you an error.
uber/react-vis,uber-common/react-vis,uber-common/react-vis,uber/react-vis,uber/react-vis,Apercu/react-vis,Apercu/react-vis,Apercu/react-vis