minor typo in docs for 'sort'

Dear all, 

on the help page for '?sort':


  'Method "shell" uses Shellsort ([...] from Sedgewick (1996))'


but in the references it is Sedgewick (1986). 1986 seems correct:

http://dx.doi.org/10.1016/0196-6774(86)90001-5


Thank you,
Enrico

Enrico Schumann
Lucerne, Switzerland
http://enricoschumann.net