message: fix: should suggest `graphql-cli` instead of `graphql`
diff: @@ -110,7 +110,7 @@ export default class ElectronApp extends React.Component<{}, State> {
  if (configString.includes('${env:')) {
  alert(`You opened a .graphqlconfig file that includes environment variables.
  In order to use environment variables in the Playground, please start it from the graphql cli. Install with
  -npm install -g graphql
  +npm install -g graphql-cli
  Then open the graphql config with:
  cd ${folderPath}; graphql playground`)
  }
  