Update README.md

Author: Zaczero

README.md

@@ -5,7 +5,7 @@
 [![NuGet Release](https://img.shields.io/nuget/v/2CaptchaAPI.svg)](https://www.nuget.org/packages/2CaptchaAPI/)
 [![License](https://img.shields.io/github/license/Zaczero/2Captcha.svg)](https://github.com/Zaczero/2Captcha/blob/master/LICENSE)
 
-Simple HTTP API wrapper for [2captcha.com](https://2captcha.com/)
+Simple HTTP API wrapper for [2captcha.com](https://2captcha.com/).
 An online captcha solving and image recognition service.
 
 *By using this library you will get **10% cashback** on captchas you solve.*