message: Minor docs change for `cargo test --help`
  Per make `cargo test -- --help` more discoverable.
diff: @@ -56,7 +56,10 @@ pub fn cli() -> App {
  .arg_message_format()
  .arg_unit_graph()
  .arg_future_incompat_report()
  - .after_help("Run `cargo help test` for more detailed information.\n")
  + .after_help(
  + "Run `cargo help test` for more detailed information.\n\
  + Run `cargo test -- --help` for test binary options.\n",
  + )
  }
  pub fn exec(config: &mut Config, args: &ArgMatches<'_>) -> CliResult {
  