- [1-about.md, About Icinga 2]
- [2-getting-started.md, Getting Started]
- [3-monitoring-basics.md, Monitoring Basics]
-- [4-advanced-topics.md, Advanced Topics]
-- [5-configuring-icinga-2.md, Configuring Icinga 2]
+- [4-configuring-icinga-2.md, Configuring Icinga 2]
+- [5-advanced-topics.md, Advanced Topics]
- [6-object-types.md, Object Types]
- [7-icinga-template-library.md, Icinga Template Library]
- [8-cli-commands.md, CLI Commands]