Update content/en/docs/setup/production-environment/tools/kubeadm/install-kubeadm.md

Co-authored-by: Lubomir I. Ivanov <[email protected]>

Author: serewicz

content/en/docs/setup/production-environment/tools/kubeadm/install-kubeadm.md

@@ -69,7 +69,7 @@ For more details please see the [Network Plugin Requirements](/docs/concepts/ext
 ## Check required ports
 These
 [required ports](/docs/reference/ports-and-protocols/)
-need to be open in order for Kubernetes components to communicate with each other. You can use NetCat to check if a port is open. For example:
+need to be open in order for Kubernetes components to communicate with each other. You can use tools like netcat to check if a port is open. For example:
 
 ```shell
 nc 127.0.0.1 6443