fix(cli): provide more context to user for searchable attribute

[bobylito]

With this change, we provide more information about what we're talking about and what is the goal of the question :)

[francoischalifour]

We iterated on this CLI question with @sarahdayan a few weeks ago and came to the conclusion that "Main attribute" was not really explicit. We thought of these two options:

• Attribute to display
• Attribute to highlight

Thinking back about it, I reckon "Attribute to display" is more explicit. We should definitely add an explanation of what this property is used for.

We can use new lines and the suffix option from Inquirer.js to make the UI a bit better. Here is what I suggest:

{
  type: 'list',
  name: 'mainAttribute',
  message: 'Attribute to display',
  suffix: `\n  ${chalk.gray('Used to generate the default result template')}`,
  // ...
}

Let me know if you agree. If so, I can take the PR over as I already have the working CLI locally.

[bobylito]

Ok that's cool by me 👍