Some remember doc

Some remember doc

* doc/misc/remember.texi: Copyedits.
(Quick Start): No need for manual autoloads.  Mention remember-notes.
(Function Reference): Update arguments.  Add new commands.

* lisp/textmodes/remember.el: Set maintainer to emacs-devel
according to remember.texi.
Move provide statement to end.
(remember-mode-map, remember-notes-mode-map, remember-notes-mode)
(remember-notes): Doc fixes.