fix link

Author: sdgilley

articles/ai-studio/toc.yml

@@ -279,7 +279,7 @@ items:
   - name: Management center 
     items:
     - name: Management center overview 
-      href: /concepts/management-center.md
+      href: concepts/management-center.md
     - name: Create a project
       href: how-to/create-projects.md
     - name: Manage projects and hubs