Documentation: wrong name of string

[Francesco-Uboldi]

In namespace reference , in the parameter description for sct_resistant(), the strings reported for the parameter background_elab_type are: vertical_profile, vertical_profile_Theil_Sen, mean_outer_circle, external: this is not correct. They should be instead: VerticalProfile, VerticalProfileTheilSen, MeanOuterCircle, MedianOuterCircle, External

[cristianlussana]

Thanks Francesco. I should have fixed it. Cr