Add structure to admin area page

Also slight edit and spelling correction
7 jobs for docs/admin-area-doc-structure in 3 minutes and 37 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #231079044
gitlab-org
danger-review

00:01:45

passed #231079042
gitlab-org
docs lint

00:02:44

passed #231079043
gitlab-org
ee_compat_check

00:02:56

passed #231079045
gitlab-org
lint-ci-gitlab

00:00:30

 
  Review
manual #231079046
allowed to fail manual
package-and-qa
 
  Post Test
passed #231079047
gitlab-org
review-docs-deploy

00:00:18

 
  Post Cleanup
passed #231079048
gitlab-org allowed to fail manual
review-docs-cleanup

00:00:21