Correcting some docstrings that refer to the obsolete 'n' function.
Correcting some docstrings that refer to the obsolete 'n' function.

This was replaced with 'int' in commit: 660c8b29ec292cbfb7c62ea4d4037e097be00756

rtfeldman/elm-css,rtfeldman/elm-stylesheets,rtfeldman/elm-stylesheets