Fix flow type for fragments

[mufasa71]

Example:

// @flow
import { gql } from 'graphql.macro'
const PostFragment = gql`
  fragment Post on PostType {
    title,
    date
  }
`

const GET_POSTS = gql`
  query getPosts {
    ...PostFragment
  }

  ${PostFragment}
`

Produces:
Cannot call gql because no more than 1 argument is expected by function

[evenchange4]

Thanks for reporting the issue!
Close it. Please feel free to reopen this issue if the problem still occurs with a newer version v1.3.4.