Fix CRD docs (minio#1757)

ExternalClientCertSecrets type broke the CRD doc format since it was introduced.
Kubernetes 1.21 links are not available, upgraded to point to 1.23

Signed-off-by: pjuarezd <pjuarezd@users.noreply.github.com>

Makefile

@@ -70,7 +70,7 @@ regen-crd:
 	@sed 's#namespace: minio-operator#namespace: {{ .Release.Namespace }}#g' resources/base/crds/sts.min.io_policybindings.yaml > $(HELM_TEMPLATES)/sts.min.io_policybindings.yaml
 
 regen-crd-docs:
-	@which crd-ref-docs 1>/dev/null || (echo "Installing crd-ref-docs" && GO111MODULE=on go install -v github.com/elastic/crd-ref-docs@latest)
+	@echo "Installing crd-ref-docs" && GO111MODULE=on go install -v github.com/elastic/crd-ref-docs@latest
 	@${GOPATH}/bin/crd-ref-docs --source-path=./pkg/apis/minio.min.io/v2  --config=docs/templates/config.yaml --renderer=asciidoctor --output-path=docs/tenant_crd.adoc --templates-dir=docs/templates/asciidoctor/
 	@${GOPATH}/bin/crd-ref-docs --source-path=./pkg/apis/sts.min.io/v1alpha1  --config=docs/templates/config.yaml --renderer=asciidoctor --output-path=docs/policybinding_crd.adoc --templates-dir=docs/templates/asciidoctor/
 

docs/policybinding_crd.adoc

@@ -56,7 +56,7 @@ PolicyBinding is a https://kubernetes.io/docs/concepts/overview/working-with-obj
 |===
 | Field | Description
 
-|*`metadata`* __link:https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.21/#objectmeta-v1-meta[$$ObjectMeta$$]__ 
+|*`metadata`* __link:https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.23/#objectmeta-v1-meta[$$ObjectMeta$$]__ 
 |Refer to Kubernetes API documentation for fields of `metadata`.
 
 

docs/templates/config.yaml

@@ -5,4 +5,4 @@ processor:
     - "TypeMeta$"
 render:
   # Version of Kubernetes to use when generating links to Kubernetes API documentation.
-  kubernetesVersion: 1.21
+  kubernetesVersion: 1.23