Clarify documentation of Gitlab::SidekiqStatus
Clarify documentation of Gitlab::SidekiqStatus

The "running" state is ambiguous. Clarify that it covers both enqueued
and actually running jobs.

mmkassem/gitlabhq,mmkassem/gitlabhq,stoplightio/gitlabhq,mmkassem/gitlabhq,stoplightio/gitlabhq,stoplightio/gitlabhq,mmkassem/gitlabhq,stoplightio/gitlabhq