resolve comments

Signed-off-by: Billy Zha <jinzha1@microsoft.com>

internal/experimental/experimental.go

@@ -37,19 +37,19 @@ func CheckCommandAndWarn(cmd *cobra.Command, args []string) error {
 func FlagsChecker(flags ...string) func(cmd *cobra.Command, args []string) error {
 	return func(cmd *cobra.Command, args []string) error {
 		if err := Check(func() (string, bool) {
-			var changed []string
+			var changedFlags []string
+			flagSet := cmd.Flags()
 			for _, flag := range flags {
-				fs := cmd.Flags()
-				fs.MarkHidden(flag)
-				if fs.Changed(flag) {
-					changed = append(changed, "--"+flag)
+				flagSet.MarkHidden(flag)
+				if flagSet.Changed(flag) {
+					changedFlags = append(changedFlags, "--"+flag)
 				}
 			}
-			if len(changed) == 0 {
+			if len(changedFlags) == 0 {
 				// no experimental flag used
 				return "", false
 			}
-			return fmt.Sprintf("using %q in %q", strings.Join(changed, ","), cmd.CommandPath()), true
+			return fmt.Sprintf("using flags %q in %q", strings.Join(changedFlags, ","), cmd.CommandPath()), true
 		}); err != nil {
 			return err
 		}