Add Gitaly timeouts topic to navigation
Adds https://docs.gitlab.com/ee/user/admin_area/settings/gitaly_timeouts.html to the global navigation for the first time.
Relates to: gitlab#211325 (closed).
Adds https://docs.gitlab.com/ee/user/admin_area/settings/gitaly_timeouts.html to the global navigation for the first time.
Relates to: gitlab#211325 (closed).