doc: close event does not take arguments

Explicitly added in the docs that the close event does not expect
any arguments when invoked.

Fixes: https://github.com/nodejs/node/issues/20018

Backport-PR-URL: https://github.com/nodejs/node/pull/22850
PR-URL: https://github.com/nodejs/node/pull/20031


Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>