Update Giant Swarm website URL (#17838)

content/en/docs/setup/_index.md

@@ -84,7 +84,7 @@ The following production environment solutions table lists the providers and the
 | [Fedora (Multi Node)](https://kubernetes.io/docs/getting-started-guides/fedora/flannel_multi_node_cluster/)     |      |  |      | |    ✔       | ✔
 | [Fedora (Single Node)](https://kubernetes.io/docs/getting-started-guides/fedora/fedora_manual_config/)     |      |  |      | |           | ✔
 | [Gardener](https://gardener.cloud/) | ✔ | ✔ | ✔ | ✔ | ✔ | [Custom Extensions](https://github.com/gardener/gardener/blob/master/docs/extensions/overview.md) |
-| [Giant Swarm](https://giantswarm.io/)     | ✔       | ✔ |   ✔    |     |
+| [Giant Swarm](https://www.giantswarm.io/)     | ✔       | ✔ |   ✔    |     |
 | [Google](https://cloud.google.com/)           |  [Google Kubernetes Engine (GKE)](https://cloud.google.com/kubernetes-engine/)       | [Google Compute Engine (GCE)](https://cloud.google.com/compute/)|[GKE On-Prem](https://cloud.google.com/gke-on-prem/)       |  |  |     |  |      |       |  |
 | [IBM](https://www.ibm.com/in-en/cloud)        | [IBM Cloud Kubernetes Service](https://cloud.ibm.com/kubernetes/catalog/cluster)| |[IBM Cloud Private](https://www.ibm.com/in-en/cloud/private) | |
 | [Ionos](https://www.ionos.com/enterprise-cloud)        | [Ionos Managed Kubernetes](https://www.ionos.com/enterprise-cloud/managed-kubernetes) | [Ionos Enterprise Cloud](https://www.ionos.com/enterprise-cloud) | |