message: modify the arg prefetch-files help msg
diff: @@ -220,7 +220,7 @@ fn append_fs_options(app: Command) -> Command {
  .arg(
  Arg::new("prefetch-files")
  .long("prefetch-files")
  - .help("A file include the list of files/directories to prefetch")
  + .help("A file including the list of files/directories to be prefetched")
  .required(false)
  .requires("bootstrap")
  .num_args(1),
  