doc: update documentation for node:process warning

PR-URL: nodejs#49517
Refs: nodejs#46862
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Moshe Atlow <moshe@atlow.co.il>

doc/api/process.md

@@ -606,7 +606,10 @@ process.on('warning', (warning) => {
 
 By default, Node.js will print process warnings to `stderr`. The `--no-warnings`
 command-line option can be used to suppress the default console output but the
-`'warning'` event will still be emitted by the `process` object.
+`'warning'` event will still be emitted by the `process` object. Currently, it
+is not possible to suppress specific warning types other than deprecation
+warnings. To suppress deprecation warnings, check out the [`--no-deprecation`][]
+flag.
 
 The following example illustrates the warning that is printed to `stderr` when
 too many listeners have been added to an event:
@@ -3954,6 +3957,7 @@ cases:
 [`'message'`]: child_process.md#event-message
 [`'uncaughtException'`]: #event-uncaughtexception
 [`--experimental-permission`]: cli.md#--experimental-permission
+[`--no-deprecation`]: cli.md#--no-deprecation
 [`--unhandled-rejections`]: cli.md#--unhandled-rejectionsmode
 [`Buffer`]: buffer.md
 [`ChildProcess.disconnect()`]: child_process.md#subprocessdisconnect