Merge pull request #3039 from Wang-Kai/master

modify description for flag usage

cmd/scheduler-estimator/app/options/options.go

@@ -42,7 +42,7 @@ func (o *Options) AddFlags(fs *pflag.FlagSet) {
 	if o == nil {
 		return
 	}
-	fs.StringVar(&o.KubeConfig, "kubeconfig", o.KubeConfig, "Path to karmada control plane kubeconfig file.")
+	fs.StringVar(&o.KubeConfig, "kubeconfig", o.KubeConfig, "Path to member cluster's kubeconfig file.")
 	fs.StringVar(&o.Master, "master", o.Master, "The address of the member Kubernetes API server. Overrides any value in KubeConfig. Only required if out-of-cluster.")
 	fs.StringVar(&o.ClusterName, "cluster-name", o.ClusterName, "Name of member cluster that the estimator serves for.")
 	fs.StringVar(&o.BindAddress, "bind-address", defaultBindAddress, "The IP address on which to listen for the --secure-port port.")