message: Adding crossfetch and json middleware to express example
diff: @@ -248,10 +248,13 @@ addEventListener("fetch", (event) => {
  </Tab>
  <Tab>
  ```ts
  +require('cross-fetch/polyfill')
  const express = require('express')
  const app = express()
  const port = 3000
  +app.use(express.json());
  +
  const Client = require('@searchkit/api').default
  const client = Client({
  