src/App/Application: Improve FC CLI help output
src/App/Application: Improve FC CLI help output

Help the user find more details info by directing them to the exact wiki page needed instead of the front page of the official site.
Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master