Is there a way to support --switch=parameter syntax ??

Given the following program --help generates help text that doesn't seem to support `--parameter=text` format, but `--parameter text`

```racket
#lang cli

(flag (file in-file-path)
("-f" "--file" "filepath")
(file in-file-path))

(program (hello)
(displayln (file))
)

(run hello)
```

CLI output:
```
PS ... > D:\Racket\Racket.exe .\tmp.rkt --help
usage: hello [ ... ]

is one of

-f , --file
filepath to write the changelog to. Can NOTE use --file=foo must use --file foo
--help, -h
Show this help
--
Do not treat any remaining argument as a switch (at this level)

* Asterisks indicate options allowed multiple times.

Multiple single-letter switches can be combined after
one `-`. For example, `-h-` is the same as `-h --`.

PS ...> D:\Racket\Racket.exe .\tmp.rkt --file hello
hello
PS ...> D:\Racket\Racket.exe .\tmp.rkt --file=hello
hello: unknown switch: --file=hello
PS C:\Users\aias\Documents\Development\simple_changelog>
```

(but thank you very much for making this little language!)