message: Minor changes for Flex example
diff: @@ -5,10 +5,10 @@ export default function () {
  return (
  <Flex height="500px" width="100px">
  <Center w="100px" h="100px" bg="green.500">
  - <Text>Box 1</Text>
  + Box 1
  </Center>
  <Center bg="blue.300" h="100px" w="100px">
  - <Text>Box 2</Text>
  + Box 2
  </Center>
  <Center flex={1} bg="tomato">
  Box 3
  