message: Fix typo in documentation for Twilio SMS bots
diff: @@ -59,8 +59,8 @@ Then you need to write your bot. First, create a TwilioSMSBot instance and pass
  * `twilio_number`: your app's phone number, found in your [Phone Numbers Dashboard](https://www.twilio.com/console/phone-numbers/dashboard) **The phone number format must be: `+15551235555`**
  ```js
  -const TwilioSMSBot = require('botkit-sms')
  -const controller = TwilioSMSBot({
  +const Botkit = require('botkit')
  +const controller = Botkit.twiliosmsbot({
  account_sid: process.env.TWILIO_ACCOUNT_SID,
  auth_token: process.env.TWILIO_AUTH_TOKEN,
  twilio_number: process.env.TWILIO_NUMBER
  