message: Replace "countries" with "world_cities"
diff: const settings = require('./settings.json')
  -const countries = require('./countries.json')
  +const cities = require('./world-cities.json')
  const { MeiliSearch } = require('meilisearch')
  -const INDEX_UID = 'countries_playground'
  +const INDEX_UID = 'cities_playground'
  ;(async () => {
  const client = new MeiliSearch({
  host: 'http://localhost:7700',
  @@ -11,7 +11,7 @@ const INDEX_UID = 'countries_playground'
  try {
  await client.deleteIndex(INDEX_UID)
  } catch (e) {
  - // countries_playground does not exist
  + // cities_playground does not exist
  }
  const settingsUpdate = await client.index(INDEX_UID).updateSettings(settings)
  const status = await client
  @@ -25,8 +25,8 @@ const INDEX_UID = 'countries_playground'
  status
  )
  }
  - const countriesUpdate = await client.index(INDEX_UID).addDocuments(countries)
  - await client.index(INDEX_UID).waitForPendingUpdate(countriesUpdate.updateId)
  + const citiesUpdate = await client.index(INDEX_UID).addDocuments(cities)
  + await client.index(INDEX_UID).waitForPendingUpdate(citiesUpdate.updateId)
  const documents = await client.index(INDEX_UID).getDocuments()
  if (documents.length === 20) {
  console.log('SUCCESS: All 20 documents have been succesfully indexed.')
  