update readme

Author: dakk

README.md

@@ -56,7 +56,9 @@ GWeatherRouting is an opensource sailing route calculator written in python and:
    - pkg-config
    - eccodes
 
-Note: if you are using a `virtualenv` you need to make symbolic links from the UI libraries to your `venv` folder (this is not needed using system interpreter outside venv).
+> [!NOTE]  
+> If you are using a `virtualenv` you need to make symbolic links from the UI libraries to your `venv` folder (this is not needed using system interpreter outside venv).
+
 3. install the required python modules with ```pip install -r requirements.txt```
 4. Then checkout the repository and run: ```python setup.py install```
 5. Start the software running: ```gweatherrouting```