Ember Octane Docs Night

Ember's Octane release (https://emberjs.com/editions/octane/) is nearly ready to go, and all the features for this new edition are landed in Ember canary.

At this meetup we'll take a look at the state of documentation (API docs, guides) for Octane, learn how the release of this content is going to be managed, and find out how to contribute.

Matt has organized a spreadsheet of documentation that needs review (or to be tried out) and we can split up that work for attendees to collaborate on: https://docs.google.com/spreadsheets/d/1UsVxZKourPuHJv1MFK-weDxNMNO4XGYtzXqRIeSvsyw/edit#gid=0

At the end of the night we'll land some documentation PRs!