adding screenshot

Author: relbns

README.md

@@ -8,6 +8,13 @@ A modern, RTL-friendly Markdown editor with live preview, math rendering, and Ap
 [![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](https://opensource.org/licenses/MIT)
 [![Based on Dor Pascal's Project](https://img.shields.io/badge/Based%20on-Hebrew%20Markdown%20Editor-blueviolet)](https://github.com/Dor-sketch/hebrew-markdown)
 
+---
+
+## 📸 Screenshot
+
+![Hebrew Markdown Editor Screenshot](https://raw.githubusercontent.com/relbns/hebrew-markdown-react/master/src/assets/screenshot.png)
+
+
 ---
 
 ## ✨ Features