[de] Update _index.md

Author: Arhell

content/de/docs/concepts/workloads/pods/_index.md

@@ -364,6 +364,6 @@ oder {{< glossary_tooltip text="Deployments" term_id="deployment" >}} einbindet,
 kannst du Artikel zu früheren Technologien lesen, unter anderem: 
  * [Aurora](https://aurora.apache.org/documentation/latest/reference/configuration/#job-schema)
  * [Borg](https://research.google.com/pubs/pub43438.html)
- * [Marathon](https://mesosphere.github.io/marathon/docs/rest-api.html)
+ * [Marathon](https://github.com/d2iq-archive/marathon)
  * [Omega](https://research.google/pubs/pub41684/)
  * [Tupperware](https://engineering.fb.com/data-center-engineering/tupperware/).