README: refer to external install instructions

README.md

@@ -42,26 +42,9 @@ For exploration and demonstration purposes, see the "demo" section below, and al
 
 ## Installation
 
-As of today, the recommended installation method is via Helm.
-Detailed instructions can (for now) be found [here](https://github.com/NVIDIA/k8s-dra-driver-gpu/discussions/249).
+Configuration and installation instructions can for now be found [in our Wiki](https://github.com/NVIDIA/k8s-dra-driver-gpu/wiki/Installation).
 In the future, this driver will be included in the [NVIDIA GPU Operator](https://github.com/NVIDIA/gpu-operator) and does not need to be installed separately anymore.
 
-### Validating Admission Webhook
-
-The validating admission webhook is disabled by default. To enable it, install cert-manager and its CRDs, then set the `webhook.enabled=true` value when the nvidia-dra-driver-gpu chart is installed.
-
-```bash
-helm install \
-  --repo https://charts.jetstack.io \
-  --version v1.16.3 \
-  --create-namespace \
-  --namespace cert-manager \
-  --wait \
-  --set crds.enabled=true \
-  cert-manager \
-  cert-manager
-```
-
 ## A (kind) demo
 
 Below, we demonstrate a basic use case: sharing a single GPU across two containers running in the same Kubernetes pod.