install: Fix README links to getting started guides

Fix two issues in the README links for getting started guides:
* Bad formatting of the image for the Self-Managed K8s option
* Broken links to the docs page for getting started.

Link all of the links to the same page, like we do on cilium.io.

Fixes: 3662560 ("Add new unified Helm guide")
Signed-off-by: Joe Stringer <joe@cilium.io>

install/kubernetes/cilium/README.md

@@ -27,7 +27,7 @@ Try Cilium on any Kubernetes distribution in under 15 minutes:
 
 | Minikube | Self-Managed K8s | Amazon EKS | Google GKE | Microsoft AKS |
 |:-:|:-:|:-:|:-:|:-:|
-| [![Minikube](https://raw.githubusercontent.com/cilium/charts/master/images/minikube.svg)](https://cilium.readthedocs.io/en/stable/gettingstarted/k8s-install-helm.html) | [![Self-Managed Kubernetes](https://raw.githubusercontent.com/cilium/charts/master/images/k8s.png)](https://cilium.readthedocs.io/en/stable/gettingstarted/k8s-install-helm.html | [![Amazon EKS](https://raw.githubusercontent.com/cilium/charts/master/images/aws.svg)](https://cilium.readthedocs.io/en/stable/gettingstarted/k8s-install-helm.html) | [![Google GKE](https://raw.githubusercontent.com/cilium/charts/master/images/google-cloud.svg)](https://cilium.readthedocs.io/en/stable/gettingstarted/k8s-install-helm.html) | [![Microsoft AKS](https://raw.githubusercontent.com/cilium/charts/master/images/azure.svg)](https://cilium.readthedocs.io/en/stable/gettingstarted/k8s-install-helm.html) |
+| [![Minikube](https://raw.githubusercontent.com/cilium/charts/master/images/minikube.svg)](https://docs.cilium.io/en/stable/gettingstarted/k8s-install-default/) | [![Self-Managed Kubernetes](https://raw.githubusercontent.com/cilium/charts/master/images/k8s.png)](https://docs.cilium.io/en/stable/gettingstarted/k8s-install-default/) | [![Amazon EKS](https://raw.githubusercontent.com/cilium/charts/master/images/aws.svg)](https://docs.cilium.io/en/stable/gettingstarted/k8s-install-default/) | [![Google GKE](https://raw.githubusercontent.com/cilium/charts/master/images/google-cloud.svg)](https://docs.cilium.io/en/stable/gettingstarted/k8s-install-default/) | [![Microsoft AKS](https://raw.githubusercontent.com/cilium/charts/master/images/azure.svg)](https://docs.cilium.io/en/stable/gettingstarted/k8s-install-default/) |
 
 Or, for a quick install with the default configuration:
 

install/kubernetes/cilium/README.md.gotmpl

@@ -29,7 +29,7 @@ Try Cilium on any Kubernetes distribution in under 15 minutes:
 
 | Minikube | Self-Managed K8s | Amazon EKS | Google GKE | Microsoft AKS |
 |:-:|:-:|:-:|:-:|:-:|
-| [![Minikube](https://raw.githubusercontent.com/cilium/charts/master/images/minikube.svg)](https://cilium.readthedocs.io/en/stable/gettingstarted/k8s-install-helm.html) | [![Self-Managed Kubernetes](https://raw.githubusercontent.com/cilium/charts/master/images/k8s.png)](https://cilium.readthedocs.io/en/stable/gettingstarted/k8s-install-helm.html | [![Amazon EKS](https://raw.githubusercontent.com/cilium/charts/master/images/aws.svg)](https://cilium.readthedocs.io/en/stable/gettingstarted/k8s-install-helm.html) | [![Google GKE](https://raw.githubusercontent.com/cilium/charts/master/images/google-cloud.svg)](https://cilium.readthedocs.io/en/stable/gettingstarted/k8s-install-helm.html) | [![Microsoft AKS](https://raw.githubusercontent.com/cilium/charts/master/images/azure.svg)](https://cilium.readthedocs.io/en/stable/gettingstarted/k8s-install-helm.html) |
+| [![Minikube](https://raw.githubusercontent.com/cilium/charts/master/images/minikube.svg)](https://docs.cilium.io/en/stable/gettingstarted/k8s-install-default/) | [![Self-Managed Kubernetes](https://raw.githubusercontent.com/cilium/charts/master/images/k8s.png)](https://docs.cilium.io/en/stable/gettingstarted/k8s-install-default/) | [![Amazon EKS](https://raw.githubusercontent.com/cilium/charts/master/images/aws.svg)](https://docs.cilium.io/en/stable/gettingstarted/k8s-install-default/) | [![Google GKE](https://raw.githubusercontent.com/cilium/charts/master/images/google-cloud.svg)](https://docs.cilium.io/en/stable/gettingstarted/k8s-install-default/) | [![Microsoft AKS](https://raw.githubusercontent.com/cilium/charts/master/images/azure.svg)](https://docs.cilium.io/en/stable/gettingstarted/k8s-install-default/) |
 
 Or, for a quick install with the default configuration: