R1:fcc2a24d63e6

Update Aphlict documentation for new server management commands

Summary:
The docs are now a little out of date.

Also //possibly// we should call this `bin/notifications` or something, maybe?

Test Plan: read

Reviewers: joshuaspence

Reviewed By: joshuaspence

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D9398