Correct spelling (#36783)

I was testing typos-cli and fixed some misspelled wording here.
All changes are internal — no public API fields, database columns,
locale keys, or migration names are affected.

cmd/mailer.go

@@ -17,10 +17,10 @@ func runSendMail(ctx context.Context, c *cli.Command) error {
 	setting.MustInstalled()
 
 	subject := c.String("title")
-	confirmSkiped := c.Bool("force")
+	confirmSkipped := c.Bool("force")
 	body := c.String("content")
 
-	if !confirmSkiped {
+	if !confirmSkipped {
 		if len(body) == 0 {
 			fmt.Print("warning: Content is empty")
 		}