[vim] Save once before autoformat
[vim] Save once before autoformat

Some autoformatter work on a saved file. So if we run the autoformatter
without first saving we end up formatting an older version.

Save once without hooks first.

Signed-off-by: Yichen <be3bb257ef8d73236feaba36cd3e5ee9095e6819@gmail.com>

yichenshen/holocron-configs