vim: remap: update Rexplore
vim: remap: update Rexplore

use - instead of \r to :Rexplore.
dash is not usually used in normal mode and is
the same key as 'go back' in netrw.

Signed-off-by: Liam Beguin <ac8b122174024ef5e58ca7d6d989651e9bbfc948@gmail.com>

Liambeguin/dotfiles,Liambeguin/dotfiles