M365 Setup - No need to specify subscriptions to scan

[AdamVB]

Summarize the content issue

In the M365 docs, we instruct to specify Subscription IDs to scan, for M365 this is not required/possible.

URL(s)

https://mondoo.com/docs/platform/infra/saas/ms365/ms365-manual/#add-a-new-microsoft-365-integration-in-the-mondoo-console

What the docs say

This section was probably copy/pasted from the azure integration and is not needed for M365:

[tas50]

@AdamVB any chance you can cut a PR for this?