jupyterlab settings - line numbers default

[Samah Sohrab]

Hi,

I'm a new user of jupyterlab and I was wondering about changing the settings. Specifically, showing line numbers.

1. From a new user standpoint, it would be nice to have this setting become the default when I change it, so that I don't have to enable it manually each time.

2. I attempted to modify the settings with a User Override, but it gives me a syntax error.
{
    "codeCellConfig": {
        "lineNumbers": true
    }
    "markdownCellConfig": {
        "lineNumbers": true
    }
    "rawCellConfig": {
        "lineNumbers": true
    }
}

Thanks for the help
Samah