Doc: Fortran compiler section needs update

In http://docs.solcore.solar/en/latest/Installation/compilation.html#windows "Windows" subsection, the links [detailed instructions written by Michael Hirsch](https://www.scivision.co/f2py-running-fortran-code-in-python-on-windows/) and [Michael Hirsch](https://www.scivision.co/f2py-running-fortran-code-in-python-on-windows/) are no longer available.