Update clerkClient import path

[willalread]

In the Upgrading to Core 2 Next.js SDK guide, clerkClient is not listed in the "Changes to top-level exports" section under the list of exports that have moved from @clerk/nextjs to @clerk/nextjs/server.
https://clerk.com/docs/upgrade-guides/core-2/nextjs#changes-to-top-level-exports

It is currently listed incorrectly in the "Deleting users" section of the Users docs under the Next.js tab as still,
import { clerkClient } from "@clerk/nextjs";
https://clerk.com/docs/users/deleting-users

However, it is listed correctly in the "Overview" section of the Backend SDK docs under the Next.js tab as,
import { clerkClient } from "@clerk/nextjs/server";
https://clerk.com/docs/references/backend/overview

[alexisintech]

Fixed!