docs(managing-app-configuration): update "kubernetes-probes" link

The previous link,
https://kubernetes.io/docs/user-guide/pod-states/#container-probes,
displays a message about Kubernetes docs being moved, and includes
a link to the new location for the particular topic.
I've updated the link to the new location, and proper heading anchor,
in the Kubernetes Pod Lifecycle documentation:
https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle/#container-probes

src/applications/managing-app-configuration.md

@@ -227,7 +227,7 @@ environ  prod
 
 
 [attached resources]: http://12factor.net/backing-services
-[kubernetes-probes]: http://kubernetes.io/docs/user-guide/pod-states/#container-probes
+[kubernetes-probes]: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle/#container-probes
 [pods-to-nodes]: http://kubernetes.io/docs/user-guide/node-selection/
 [release]: ../reference-guide/terms.md#release
 [router]:  ../understanding-workflow/components.md#router