fix kots-adm-tls typo

Author: laverya

docs/vendor/packaging-using-tls-certs.mdx

@@ -20,7 +20,7 @@ kURL sets up a Kubernetes secret called `kotsadm-tls`. The secret stores the TLS
 
 Before you can reference the TLS certificate in other resources, you must get the `kotsadm-tls` secret output.
 
-To get the `kots-adm-tls` secret, run:
+To get the `kotsadm-tls` secret, run:
 
 ```shell
 kubectl get secret kotsadm-tls -o yaml