Update plantuml.md, Fix wrong order when restarting tomcat service

Closed username-removed-1273745 requested to merge vladel/gitlab-ee:master into master

What does this MR do?

Fixes a typo. Wrong order when restarting tomcat service in debian based linux distributions

Are there points in the code the reviewer needs to double check?

No

Why was this MR needed?

To fix a typo

Screenshots (if relevant)

Does this MR meet the acceptance criteria?

What are the relevant issue numbers?