fix comments

pkg/controllers/job/plugins/ssh/ssh.go

@@ -23,7 +23,6 @@ import (
 	"encoding/pem"
 	"flag"
 	"fmt"
-	"volcano.sh/volcano/pkg/controllers/job/plugins/env"
 
 	"golang.org/x/crypto/ssh"
 
@@ -34,6 +33,7 @@ import (
 	batch "volcano.sh/volcano/pkg/apis/batch/v1alpha1"
 	"volcano.sh/volcano/pkg/apis/helpers"
 	jobhelpers "volcano.sh/volcano/pkg/controllers/job/helpers"
+	"volcano.sh/volcano/pkg/controllers/job/plugins/env"
 	"volcano.sh/volcano/pkg/controllers/job/plugins/interface"
 )
 
@@ -194,7 +194,7 @@ func (sp *sshPlugin) addFlags() {
 	// TODO: deprecate no-root
 	flagSet.BoolVar(&sp.noRoot, "no-root", sp.noRoot, "The ssh user, --no-root is common user")
 	flagSet.StringVar(&sp.sshKeyFilePath, "ssh-key-file-path", sp.sshKeyFilePath, "The path used to store "+
-		"ssh private and public keys, by default it is `/root/.ssh`")
+		"ssh private and public keys, it is `/root/.ssh` by default")
 
 	if err := flagSet.Parse(sp.pluginArguments); err != nil {
 		glog.Errorf("plugin %s flagset parse failed, err: %v", sp.Name(), err)