message: fix send a message with a webhook test
  Waits for server confirmation of message send before response, and returns the created message body (defaults to false; when false a message that is not saved does not return an error)
diff: @@ -9,6 +9,7 @@ Deno.test("[webhooks] Send a message with a webhook", async (t) => {
  assertExists(webhook.token);
  const message = await bot.helpers.sendWebhook(webhook.id, webhook.token, {
  content: "discordeno is best lib",
  + wait: true,
  });
  assertExists(message);
  