Intel 2023.1.0 option: typo in URL address

[perazz]

It works anyways in the CI, but I believe this is a typo in the following URL:

setup-fortran/setup-fortran.sh

Lines 401 to 402 in 2a11c57

	MACOS_BASEKIT_URL=https:/registrationcenter-download.intel.com/akdlm/IRC_NAS/2516a0a0-de4d-4f3d-9e83-545b32127dbb/m_BaseKit_p_2023.1.0.45568.dmg
	MACOS_HPCKIT_URL=https:/registrationcenter-download.intel.com/akdlm/IRC_NAS/a99cb1c5-5af6-4824-9811-ae172d24e594/m_HPCKit_p_2023.1.0.44543.dmg

My proposed fix is at PR #76.

Thank you @fortran-lang/admins @wpbonelli

[wpbonelli]

Thanks @perazz. Looks like it worked before because curl is forgiving about slash counts