Upload the signed certificate the command didn't work without the "-i…

…" option using the base64 command

content/en/docs/tasks/tls/managing-tls-in-a-cluster.md

@@ -262,7 +262,7 @@ Finally, populate the signed certificate in the API object's status:
 
 ```shell
 kubectl get csr my-svc.my-namespace -o json | \
-  jq '.status.certificate = "'$(base64 ca-signed-server.pem | tr -d '\n')'"' | \
+  jq '.status.certificate = "'$(base64 -i ca-signed-server.pem | tr -d '\n')'"' | \
   kubectl replace --raw /apis/certificates.k8s.io/v1/certificatesigningrequests/my-svc.my-namespace/status -f -
 ```