Add missing setWebhook secret_token parameter to the documentation

[rznzippy]

Feature Request

I have:

• searched for such a feature request ( enhancement ) and found none

Introduction

Missing documentation of secret_token key of options argument on TelegramBot.setWebhook method. This parameter is supported by Telegram and allows fulfill every request with a secret token that makes it harder to spoof Telegram requests.

Example

const secretToken = '...'; // <!-- your secret token
const bot = new TelegramBot(token, {polling: false});
bot.setWebhook(webhookUrl, {secret_token: secretToken});

[cmj2002]

Can you also add this to @types/node-telegram-bot-api ?