`fxios --clean` option `--all` cannot be shortened to `--a` as described in the `--help` usage guide

I tried to use the --a short form for --all with fxios --clean, but received an error despite this option being documented in the help menu.

> fxios clean --help
OVERVIEW: Clean up various cached or generated files.

USAGE: fxios clean [--packages] [--build] [--derived-data] [--all] [--expose]

OPTIONS:
  -p, --packages          Reset and resolve Swift packages.
  -b, --build             Delete the .build directory.
  -d, --derived-data      Delete ~/Library/Developer/Xcode/DerivedData.
  -a, --all               Clean everything (packages, build, and derived data).
  --expose                Print the commands instead of running them.
  --version               Show the version.
  -h, --help              Show help information.

> fxios clean --a   
Error: Unknown option '--a'. Did you mean '--all'?
Usage: fxios clean [--packages] [--build] [--derived-data] [--all] [--expose]
  See 'fxios clean --help' for more information.

I had to type fxios clean --all for the command to run as expected.

Start at the fxios clean command's option declarations and compare the --all help entry with its accepted aliases. Verify that fxios clean --a behaves like fxios clean --all, and run the relevant command tests if the project provides them.