message: Update pages/components/docs/Flex.md
diff: # Flex and Flex.Item
  -Flex is a component that will allow you to use flex box properties
  +Flex is a component that will allow you to use flexbox properties.
  *** Previously, `Flex.Item` was used for flex item specific properties - we've added all properties to the `Flex` component, but are keeping Flex.Item around for backwards compatibility. ***
  