Update deploy button image in README.md

Author: Syntax-Error-1337

README.md

@@ -1,6 +1,6 @@
 # 📬 Open-Temp-Mail
 
-[![Deploy to Cloudflare Workers](https://deploy.workers.cloudflare.com/deploy-button.svg)](https://deploy.workers.cloudflare.com/?url=https://github.com/Syntax-Error-1337/open-temp-mail)
+[![Deploy to Cloudflare Workers](https://deploy.workers.cloudflare.com/button)](https://deploy.workers.cloudflare.com/?url=https://github.com/Syntax-Error-1337/open-temp-mail)
 ![License](https://img.shields.io/badge/license-MIT-blue.svg)
 ![Version](https://img.shields.io/badge/version-1.0.0-green.svg)
 ![Status](https://img.shields.io/badge/status-stable-success.svg)