Update `license check` documentation.
Update `license check` documentation.

With recent changes, the license check will also verify the `max_nodes`
license value. Also no license check at all is available on the CE
distribution.

crate/crate,crate/crate,EvilMcJerkface/crate,EvilMcJerkface/crate,crate/crate,EvilMcJerkface/crate