dead link in contributing

[bkmi]

I'm interested in predicting ground truth energies. You mention a correction from MP20 and provide a link on this page.

11. e_form_per_atom_mp2020_corrected: Matbench Discovery takes these as ground truth for the formation energy. The result of applying the MP2020 energy corrections (latest correction scheme at time of release) to e_form_per_atom_uncorrected.
12. e_correction_per_atom_mp2020: MaterialsProject2020Compatibility energy corrections in eV/atom.
13. e_correction_per_atom_mp_legacy: Legacy MaterialsProjectCompatibility energy corrections in eV/atom. Having both old and new corrections allows updating predictions from older models like MEGNet that were trained on MP formation energies treated with the old correction scheme.

However, that link is a 404.

[janosh]

Thanks @bkmi for catching. Should be fixed.