Update README.md

Author: TahaHatami

README.md

@@ -46,7 +46,8 @@ Do **NOT** use it against any target without **explicit permission**.
    pip install flask
 
 3. Run the app:
-`python app.py`
+   ```bash
+   python app.py
 
 4. Open the URL shown in your terminal (e.g. http://127.0.0.1:5000)