Update controlling-access.md as --insecure-port flag deprecated (#29447)

* Update English version of controlling-access.md as --insecure-port flag deprecated

* Update controlling-access.md as --insecure-port flag deprecated

* Update content/en/docs/concepts/security/controlling-access.md

Co-authored-by: Qiming Teng <[email protected]>

Co-authored-by: Qiming Teng <[email protected]>

Author: simanw

content/en/docs/concepts/security/controlling-access.md

@@ -142,7 +142,7 @@ By default, the Kubernetes API server serves HTTP on 2 ports:
       - is intended for testing and bootstrap, and for other components of the master node
         (scheduler, controller-manager) to talk to the API
       - no TLS
-      - default is port 8080, change with `--insecure-port` flag.
+      - default is port 8080
       - default IP is localhost, change with `--insecure-bind-address` flag.
       - request **bypasses** authentication and authorization modules.
       - request handled by admission control module(s).