message: fix: tests with structopt
diff: @@ -43,7 +43,7 @@ impl FromStr for KeyBindingsWrapper {
  /// Ion is a commandline shell created to be a faster and easier to use
  /// alternative to the currently available shells. It is not POSIX compliant.
  #[cfg_attr(feature = "advanced_arg_parsing", derive(StructOpt))]
  -#[cfg_attr(feature = "advanced_arg_parsing", structopt(name = "Ion"))]
  +#[cfg_attr(feature = "advanced_arg_parsing", structopt(name = "ion"))]
  struct CommandLineArgs {
  /// Shortcut layout. Valid options: "vi", "emacs"
  #[cfg_attr(feature = "advanced_arg_parsing", structopt(short = "-o"))]
  