Mention/Link `Intents` page in related articles.

[onerandomusername]

This page, which documents how to create an application should also link to intents, since while on the same page, its often good to turn them on. Most people who are writing a bot want to be able to use the commands features, so turning on message intents here would be good practice.

At minimum, a link should exist, where they can be explained more in-depth.

https://guide.disnake.dev/000-prerequisites/002-creating-your-application/