message: chore(mfsu): add ; charset=UTF-8 affix
diff: @@ -144,7 +144,7 @@ export class MFSU {
  }
  res.setHeader(
  'content-type',
  - lookup(extname(req.path)) || 'text/plain',
  + `${lookup(extname(req.path)) || 'text/plain'}; charset=UTF-8`,
  );
  const relativePath = req.path.replace(
  new RegExp(`^${publicPath}`),
  