[BUG] discrepancy between github and npm

[ljharb]

What / Why

See https://github.com/airbnb/javascript/blob/master/packages/eslint-config-airbnb/README.md vs https://www.npmjs.com/package/eslint-config-airbnb, on github it's:

2. Add `"extends": "airbnb"` to your `.eslintrc`

but on npm it renders as:

1. Add `"extends": "airbnb"` to your `.eslintrc`