nbdev_install_quarto does not work in Windows

When I executed that command after doing `pip install nbdev` on a windows machine, it gives me the message

```
$ nbdev_install_quarto
Please visit https://quarto.org/docs/get-started/ to install quarto
```
After installing it manually and restarting VScode, it started working.

Start by running `pip install nbdev` and `nbdev_install_quarto` on Windows, then compare the result with the manual Quarto installation described in the issue. Trace the `nbdev_install_quarto` entry point and verify that the command can locate or install Quarto on Windows without requiring a VS Code restart.

Written by the indexing model from the issue text.