Update README.md

Author: codewithsimon

README.md

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 Create engaging quizzes in seconds using the power of AI!  
 **AI Quiz Craft** leverages Google's **Gemini API** to automatically generate customized quiz questions on any topic, delivering a seamless and intelligent quiz-building experience.
 
-![App Screenshot](screenshot.jpg) <!-- Replace with your actual screenshot path -->
+![App Screenshot](Screenshot.jpg) <!-- Replace with your actual screenshot path -->
 
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 ## 🚀 Features
 
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 - 🛡️ **TypeScript-First Codebase**  
   Designed for reliability, scalability, and maintainability.
 
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 ## ⚙️ How It Works
 
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 3. **Take the Quiz**  
    Answer the questions and view your score instantly.
 
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 ## 🛠️ Tech Stack
 
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 - HTML & CSS
 - [Gemini API](https://ai.google.dev/) for quiz content generation
 
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 ## 📦 Installation
 
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 npm run dev
 ```
 
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 ## 🗝️ Gemini API Setup
 
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 GEMINI_API_KEY=your_gemini_api_key_here
 ```
 
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 ## 💡 Usage
 
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 3. Gemini will return a set of quiz questions.
 4. Answer the questions and get your score instantly!
 
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 ## 🤝 Contributing
 
 Contributions are welcome!  
 Please open an issue or pull request to discuss any changes.
 
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 ## 📄 License
 
 This project is licensed under the [MIT License](LICENSE).
 
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 ## 🙋‍♂️ Questions?
 
 Open an [issue](https://github.com/codewithsimon/ai-quiz-craft/issues) or reach out to [codewithsimon](https://github.com/codewithsimon).
 
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 Let me know if you want to add demo links, screenshots, or more instructions!