Updated docs/emacs and emacs.d/auctex/h-wrtn

  * docs/emacs/emacs.org: added several new 'shortcuts' for CDLaTeX
    'completion' system;
  * emacs.d/auctex/h-wrtn/note.el: fixed 'provided' name.

Signed-off-by: Vladimir Lomov <lomov.vl@gmail.com>