_parameter_ typo fix

[sbeckeriv]

Dearest Reviewer,

This is a a typo fix. While I am here I have a question about parameter. Why would a parameter include a var-name if it was not in the name parameter format (x: Int)?

  def bar: (untyped `type`, void: untyped `void`) -> untyped

In this test what does type do? https://github.com/ruby/rbs/blob/master/test/rbs/signature_parsing_test.rb#L786

I am mostly reading the syntax document. Is there another document I should be reading for reference?

Thanks for your time,

Dictated but not reviewed,
Becker

[soutaro]

Thank you @sbeckeriv !

def foo: (String name, email: String address) -> void

Let's think about the example above. The name is the name of parameter and email is the name of keyword. I think your question is about address. It's just because I reuse the syntax rule for parameter in keyword type too.

I agree that there is much of usage for the name in keyword arguments, but causing some confusion... Just removing it might make more sense.