message: doc: updated copyright year
diff: linkcolor=blue,
  pdfborder={0 0 0}}
  -\copyrightyears{2018--2019}
  +\copyrightyears{2018--2020}
  \trademarkacknowledgment{%
  Intel, the Intel logo, Xeon, Intel Xeon Phi, and Intel Core are
  trademarks of Intel Corporation in the U.S. and/or other countries.
  