Update mkdocs.yml

mkdocs.yml

@@ -361,6 +361,21 @@ nav:
 
   - Nebula Console: nebula-console.md
 
+  - Nebula Graph Cloud:
+    - What is Nebula Graph Cloud: nebula-cloud/1.what-is-cloud.md
+    - Create a subscription: nebula-cloud/2.how-to-create-subsciption.md
+    - Configure a Solution: nebula-cloud/3.how-to-set-solution.md
+    - Cloud Solution roles: nebula-cloud/4.user-role-description.md
+    - Solution operation:
+      - Solution: nebula-cloud/5.solution/5.0.introduce-solution.md
+      - Accessory applications(Dashboard/Studio/Explorer): nebula-cloud/5.solution/5.1.supporting-application.md
+      - Private Link: nebula-cloud/5.solution/5.2.connection-configuration-and-use.md
+      - Roles and authority management: nebula-cloud/5.solution/5.3.role-and-authority-management.md
+    - Pricing: nebula-cloud/6.pricing.md
+    - Terms of service: nebula-cloud/7.terms-and-conditions.md
+    - Privacy policy: nebula-cloud/8.privacy-policy.md
+
+
   - Nebula Graph Studio:
     - Change Log: nebula-studio/about-studio/st-ug-release-note.md
     - About Nebula Graph Studio: