Documentation for 'import/no-extraneous-dependencies' is missing

The rule is set to error in the config:
https://github.com/airbnb/javascript/blob/master/packages/eslint-config-airbnb-base/rules/imports.js#L71

But there's no mention of it in the guide:
https://github.com/airbnb/javascript/blob/master/README.md

This rule should be mentioned under the Modules section.

Start with README.md's Modules section and compare it with the rule enabled in packages/eslint-config-airbnb-base/rules/imports.js at the referenced line. Document import/no-extraneous-dependencies there, then verify that the guide mentions the configured rule accurately.

Written by the indexing model from the issue text.