fix(sample) Modify sample crd file extension in kustomize configuration

Signed-off-by: Jérémie MONSINJON <jeremie.monsinjon@gmail.com>

config/samples/kustomization.yaml

@@ -24,6 +24,6 @@ secretGenerator:
       - namespace=harbor.scanner.clair:store
 
 resources:
-  - goharbor_v1alpha1_harbor.yam
+  - goharbor_v1alpha1_harbor.yaml
   - certificate.yaml
   - requirements.tmpl