Fix typo in Sidekiq memory killer document
Fix typo in the Sidekiq memory killer document.
The forceful termination wait time should be Sidekiq.options[:timeout] + 2
, not Sidekiq.options[:timeout] * 2
.
Refer to code https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/sidekiq_middleware/memory_killer.rb#L50:
wait_and_signal_pgroup(Sidekiq.options[:timeout] + 2, 'SIGKILL', 'die')
and code https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/sidekiq_daemon/memory_killer.rb#L119
signal_and_wait(Sidekiq.options[:timeout] + 2, 'SIGTERM', 'gracefully shut down')