message: Fix unintenional newline in stderr assertion
diff: @@ -543,8 +543,7 @@ fn restricted_windows_name() {
  .with_stderr(
  "\
  [ERROR] cannot use name `nul`, it is a reserved Windows filename
  -If you need a crate name to not match the directory name, consider using --name fla
  -g.
  +If you need a crate name to not match the directory name, consider using --name flag.
  ",
  )
  .run();
  