Modify documentation to explain use of parentheses

@solidcell @jacobaweiss @linedotstar 
Thank you for that Matt.

I just would like to point out that example was probably not the best one to demonstrate the lonely closing bracket:

some more example:

passing an object as parameter

    $.ajax(
        type: 'POST'
        url: url
        data: 
            name: 'first'
            age: 22
        success: success,
        dataType: dataType
    )


passing a multi-line callback function

    myFunction('first param', (cbParam = null) ->
        return 'something' if cbParam?
        'somethingelse'
    )

In both example above I would omit the parentheses because of the "rule of lonely parentheses".

I understand that it going to be only in your forked version, but still would like to ask your opinion about these (edge?) cases. Do you feel it still makes more opportunity to introduce bugs?