Update for flux API changes

Signed-off-by: David Young <davidy@funkypenguin.co.nz>

docs/kubernetes/ingress/nginx.md

@@ -56,7 +56,7 @@ Now that the "global" elements of this deployment (*Namespace and HelmRepository
 
 ??? example "Example Kustomization (click to expand)"
     ```yaml
-    apiVersion: kustomize.toolkit.fluxcd.io/v1beta1
+    apiVersion: kustomize.toolkit.fluxcd.io/v1
     kind: Kustomization
     metadata:
       name: nginx-ingress-controller
@@ -69,7 +69,6 @@ Now that the "global" elements of this deployment (*Namespace and HelmRepository
       sourceRef:
         kind: GitRepository
         name: flux-system
-      validation: server
       healthChecks:
         - apiVersion: apps/v1
           kind: Deployment

docs/kubernetes/ingress/traefik/index.md

@@ -58,7 +58,7 @@ spec:
 Now that the "global" elements of this deployment (*Namespace and HelmRepository*) have been defined, we do some "flux-ception", and go one layer deeper, adding another Kustomization, telling flux to deploy any YAMLs found in the repo at `/traefik`. I create this example Kustomization in my flux repo:
 
 ```yaml title="/bootstrap/kustomizations/kustomization-traefik.yaml"
-apiVersion: kustomize.toolkit.fluxcd.io/v1beta1
+apiVersion: kustomize.toolkit.fluxcd.io/v1
 kind: Kustomization
 metadata:
   name: traefik
@@ -71,7 +71,6 @@ spec:
   sourceRef:
     kind: GitRepository
     name: flux-system
-  validation: server
   healthChecks:
     - apiVersion: apps/v1
       kind: Deployment