Update how we import helmet in documentation (#829)

Author: jhardy

packages/www/src/Layout/Documentation.tsx

@@ -27,7 +27,7 @@
 import { MDXRenderer } from 'gatsby-plugin-mdx'
 import { graphql } from 'gatsby'
 import React, { FC } from 'react'
-import Helmet from 'react-helmet'
+import { Helmet } from 'react-helmet'
 import styled from 'styled-components'
 import {
   Heading,

packages/www/src/pages/index.tsx

@@ -38,7 +38,7 @@ import {
 import { useStaticQuery, graphql } from 'gatsby'
 import React from 'react'
 import styled from 'styled-components'
-import Helmet from 'react-helmet'
+import { Helmet } from 'react-helmet'
 import Layout from '../Layout'
 import { LayoutMain } from '../Layout/Layout'