Minor(UX): Ask for one-time passowrd, not totp (#35)

A user hit an issue where the term TOTP during initial setup was not intuitive, resulting in entering the wrong setup information.

This should resolve the issue by being explicit about what info we're asking for.

pkg/okta/factors.go

@@ -52,7 +52,7 @@ func promptForFactor(factors []*Factor, p input.Prompter) (int, error) {
 func verifyTOTP(c *Client, f *Factor, a *Auth, p input.Prompter) error {
 	var resp io.Reader
 	for {
-		totp, err := p.Prompt("Enter TOTP: ")
+		totp, err := p.Prompt("Enter Okta One-Time Password (TOTP): ")
 		if err != nil {
 			return err
 		}