Switch namespace in example (docs)

Co-authored-by: Amund Tenstad <[email protected]>
Signed-off-by: Erik Godding Boye <[email protected]>

Author: erikgb

docs/spec/v1/kustomizations.md

@@ -194,7 +194,7 @@ apiVersion: kustomize.toolkit.fluxcd.io/v1
 kind: Kustomization
 metadata:
   name: app
-  namespace: tenant
+  namespace: default
 spec:
   # ...omitted for brevity
   targetNamespace: app-namespace