fix(summary): moving summary at the right place

docs/SUMMARY.md

@@ -0,0 +1,54 @@
+# Summary
+
+* [Introduction](README.md)
+* [Architecture](architecture.md)
+   * [xo-server](xo-server.md)
+   * [xo-web](xo-web.md)
+   * [xo-cli](xo-cli.md)
+   * [others](others.md)
+* [Installation](installation.md)
+   * [XOA](xoa.md)
+       * [Updater](updater.md)
+       * [Trial activation](trial_activation.md)
+       * [Plugins](plugins.md)
+       * [Logs](logs.md)
+       * [Troubleshooting](troubleshooting.md)
+   * [From the sources](from_the_sources.md)
+* [Configuration](configuration.md)
+* [Features](features.md)
+   * [Administration](administration.md)
+   * [Docker support](docker_support.md)
+   * [Backups](backups.md)
+       * [Full backups](full_backups.md)
+       * [Rolling snapshots](rolling_snapshots.md)
+       * [Continuous Delta backups](delta_backups.md)
+       * [Continuous Replication](continuous_replication.md)
+   * [Disaster recovery](disaster_recovery.md)
+   * [User authentication](authentication.md)
+       * [Built-in](built-in.md)
+       * [LDAP](ldap.md)
+       * [SAML](saml.md)
+       * [GitHub](github.md)
+       * [Google](google.md)
+   * [Resources delegation](resources_delegation.md)
+       * [ACLs](acls.md)
+   * [CloudInit](cloudinit.md)
+   * [Self Service](self_service.md)
+   * [Visualizations](visualizations.md)
+   * [Health](health.md)
+   * [Job manager](scheduler.md)
+   * [Alerts](alerts.md)
+   * [Load balancing](load_balancing.md)
+   * [Auto scalability](auto_scalability.md)
+   * [Forecaster](forecaster.md)
+* [Recipes](recipes.md)
+   * [Reverse proxy](reverse_proxy.md)
+* [How to contribute?](contributing.md)
+* [Roadmap](roadmap.md)
+* [Purchase](purchase.md)
+   * [Direct purchase](directpurchase.md)
+   * [Through purchase department](through_purchase_department.md)
+   * [Reseller](reseller.md)
+   * [Editions](editions.md)
+   * [Trial](trial.md)
+   * [Invoices](invoices.md)