lib.sort: Make doc consistent with sortOn

     default comparison on a function-derived property, and may be more efficient.

     Example:

       sort (a: b: a < b) [ 5 3 7 ]

       sort (p: q: p < q) [ 5 3 7 ]

       => [ 3 5 7 ]

     Type:

       sort :: (a -> a -> Bool) -> [a] -> [a]

  */

  sort = builtins.sort or (

    strictLess: list: