docs(readme): fix chrome-launcher import example

[TortitasT]

Summary

This PR fixes the chrome-launcher import in the first example of docs/README.md

This is a bugfix.

The module chrome-launcher doesn't appear to have a default export. You can test this on a blank node project by:

• Running npm i chrome-launcher
• Adding "type": "module" to package.json file.
• Writing import chromeLauncher from 'chrome-launcher'; on an index.js file.
• Running node index.js

Related Issues/PRs

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