update network key prompt message

- fix lint

Author: kc1116

internal/command/command.go

@@ -25,8 +25,7 @@ import (
 	"io/ioutil"
 	"net/http"
 	"strings"
-
-	"github.com/spf13/afero"
+	"time"
 
 	"github.com/onflow/flow-cli/build"
 	"github.com/onflow/flow-cli/pkg/flowkit"
@@ -38,6 +37,7 @@ import (
 
 	"github.com/getsentry/sentry-go"
 	"github.com/spf13/afero"
+
 	"github.com/spf13/cobra"
 )
 

pkg/flowkit/output/prompt.go

@@ -159,7 +159,7 @@ func namePrompt() string {
 
 func secureNetworkKeyPrompt() string {
 	networkKeyPrompt := promptui.Prompt{
-		Label: "Enter host network key",
+		Label: "Enter a valid host network key or leave blank",
 		Validate: func(s string) error {
 			if s == "" {
 				return nil