doc (cli.go): fix comment above the 'Options.username' property
@@ -71,7 +71,7 @@ type Options struct {
Timeout time.Duration
// ConnectionName is the name to use for the underlying NATS connection
ConnectionName string
- // Nkey is the file holding a nkey to connect with
+ // Username is the username or token to connect with
Username string
// Password is the password to connect with
Password string
