Remove self-links with domain names in docs (#4299)

* Remove self-links with domain names in docs

Fixes #4191. Skipping the tutorials we import from kubernetes/examples.

Signed-off-by: Ahmet Alp Balkan <ahmetb@google.com>

* update federation/index.md user-guide links

* update assign-pod-node.md links

* update dns-pod-service.md link

* update link in jobs-run-to-completion.md

* update link in minikube.md

* update PS link in minikube.md

* update links in stackpoint.md

* update links in storage.md

* fix link in vsphere.md

* fix links in deprecation-policy.md

* Update pick-right-solution.md

* Update web-ui-dashboard.md

* Update ingress.md

* Update federation-service-discovery.md

* Update user-guide.md

* Update expose-external-ip-address.md

* Update README.md

* Update README.md

docs/tasks/administer-federation/cluster.md

@@ -106,7 +106,7 @@ Currently, only integers are supported with `Gt` or `Lt`.
 ## Clusters API reference
 
 The full clusters API reference is currently in `federation/v1beta1` and more details can be found in details in the
-[Federation API reference page](https://kubernetes.io/docs/reference/federation/).
+[Federation API reference page](/docs/reference/federation/).
 
 {% endcapture %}