Update app.py

app.py

@@ -42,7 +42,7 @@ st.write("""
    - **Exercise**: Build and train a simple GAN to generate synthetic images. Use a dataset like MNIST to generate handwritten digits.
 
 10. **Deploying PyTorch Models**
-    - **Exercise**: Learn how to save, load, and deploy PyTorch models. Create a simple web application using Flask to serve a trained model for inference.
+    - **Exercise**: Learn how to save, load, and deploy PyTorch models. Create a simple web application using Steamlit to serve a trained model for inference.
 """)
 
 # Conclusion