test -h prints help when the man page says it tests for a symbolic link

Reproduction:

$ test --help | rg -e "-h" -A 2
    -h FILE
        FILE exists and is a symbolic link (same as -L)
$ test -h /path/to/file
... prints help

Expected behavior: Same as -L.

Workaround: Use -L.

Build information: Starts with d096b4d1 due to the addition of check_help.

The fix:

• Rely on --help for showing help text for test.