Open a markdown file with JupyterLab's Markdown Preview

I used the [nbgitpuller link generator](https://nbgitpuller.readthedocs.io/en/latest/link.html) and filled `README.md` in the "File to open" field and JupyterLab in the "Application to Open" field. Indeed, JupyterLab opens the correct file, but with a text editor. I would like to have an option to open the file with a Markdown Preview instead (it is available by right-clicking a file in JupyterLab and selecting _Open with > Markdown Preview_).