Masafumi Koba afec0f5ca0 [ruby/erb] Fix -h CLI option ...

(https://github.com/ruby/erb/pull/126)

Fixes the `Unknown switch: "-h"` error message when running `erb -h`:

```sh-session
$ libexec/erb -h 2>&1 | head -3
Unknown switch: "-h"
Usage:
  erb [options] [filepaths]
```

The short `-h` option is already documented in the help message:

```sh-session
$ libexec/erb --help 2>&1 | grep 'help'
  -h          --help       Print this text and exit.
```

https://github.com/ruby/erb/commit/0f9a6d6a7a

2026-07-20 08:22:03 +00:00

..

bundle

…

bundler

…

erb

…

syntax_suggest

…