Wrong Documentation for requires_username

[etwillbefine]

Description

The Documentation says requires_username needs to be a property of validation. By following the Documentation Auth0 returns a Bad Request saying "Payload validation error: 'Additional properties not allowed: requires_username' on property options.validation (Options for validation).".

I actually like the idea of having requires_username within the validation field as it is currently documented.
So instead of opening a PR with Documentation Changes I first wanted to check in if there might be a version mismatch or if you are planning to support the documented data structure.

Reproduction

HTTP POST /api/v2/connections
{
	"name": "test2",
	"strategy": "auth0",
	"options": {
		"validation": {
		       "requires_username": true,
			"username": {
				"min": 1,
				"max": 5
			}
		}
	}
}

The current API Behaviour is to accept requires_username inside the options object.

Environment

Please provide the following:

• Version of this library used: Latest
• Version of the platform or framework used, if applicable:
• Other relevant versions (language, server software, OS, browser): Curl/Postman
• Other modules/plugins/libraries that might be involved: correctly transfer username validation to auth0 alexkappa/terraform-provider-auth0#258