Create new map topics from "Configuring your enterprise" (#39264)

Co-authored-by: Laura Coursen <lecoursen@github.com>

content/admin/administering-your-instance/index.md

@@ -0,0 +1,16 @@
+---
+title: Administering your instance
+shortTitle: Administer your instance
+intro: 'You can administer your instance using SSH and command-line utilities.'
+versions:
+  ghes: '*'
+  ghae: '*'
+type: how_to
+topics:
+  - Enterprise
+children:
+  - /accessing-the-administrative-shell-ssh
+  - /enabling-and-scheduling-maintenance-mode
+  - /site-admin-dashboard
+  - /command-line-utilities
+---