message: docs: add pseudo example
diff: @@ -347,7 +347,13 @@ import { Box, Text } from "@chakra-ui/core"
  ```jsx live=false
  import { Button } from '@chakra-ui/core'
  -
  +// :hover style
  +<Button colorScheme="teal" _hover={{
  + background: "white",
  + color: "teal.500"
  +}}>
  + Hover me
  +</Button>
  ```
  | Prop | CSS Property | Theme Field |
  