Reorganize Federation tasks so we have it group and under one topic (#12900)

* Reorganize Federation tasks so we have it group and under one topic

* Intended replacement

content/en/docs/contribute/style/content-organization.md

@@ -108,7 +108,6 @@ Another widely used example is the `includes` bundle. It sets `headless: true` i
 en/includes
 ├── default-storage-class-prereqs.md
 ├── federated-task-tutorial-prereqs.md
-├── federation-content-moved.md
 ├── index.md
 ├── partner-script.js
 ├── partner-style.css

content/en/docs/contribute/style/style-guide.md

@@ -327,7 +327,7 @@ Shortcodes inside include statements will break the build. You must insert them
 
 ```
 {{</* note */>}}
-{{</* include "federation-current-state.md" */>}}
+{{</* include "task-tutorial-prereqs.md" */>}}
 {{</* /note */>}}
 ```