Error in the README re: scoped packages

[abea]

Hi there. This is no longer accurate:

At the time of publishing, Apostrophe CMS doesn't automatically support @scoped/ dependency modules, which causes an error when the CMS starts up and is unable to symlink the source of the modules into the /public folder correctly.

More on the forum post related to the release where this was available: https://forum.apostrophecms.org/t/apostrophe-2-86-0-namespaced-npm-module-support-effortless-migrations-in-dev-quiet-warnings-fixes-and-more/714