Can `URL` be finally dropped while you’re making breaking changes? Surprised to see this still left ...

# dokka

[Zac Sweers]

Can URL be finally dropped while you’re making breaking changes? Surprised to see this still left in place in the new APIs 🤔

[Oleg Yukhnevich]

AFAIK there is no usage of URL in new Gradle DSL - URI is used instead.
Under the hood there are places where URL is used, but that should be fine, no?

[Zac Sweers]

let me check again 👀

[Zac Sweers]

looks all good now 👍

[Adam Semenenko]

There's a mistake in the migration guide, and it suggests using URL in the new DSL.

The guide will be fixed in this PR.