Create index.md

Author: mohfy

index.md

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+---
+title: My GitHub Site
+---
+
+# Welcome to My Site
+
+Hello! This is my GitHub Pages site built with Markdown.  
+
+- Easy to write  
+- Auto-converted to HTML  
+- Supports **bold**, *italic*, `code`, and links  
+
+[Check out my GitHub](https://github.com/your-username)