doc: document rmdir/recursive deprecation

Document deprecation of rmdir/recursive permissive functionality

PR-URL: #35579
Refs: #35562
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>

doc/api/deprecations.md

@@ -2628,6 +2628,20 @@ Type: Documentation-only
 The [`crypto.Certificate()` constructor][] is deprecated. Use
 [static methods of `crypto.Certificate()`][] instead.
 
+### DEP0XXX: `fs.rmdir(path, { recursive: true })`
+<!-- YAML
+changes:
+  - version: REPLACME
+    pr-url: https://github.com/nodejs/node/pull/35579
+    description: Documentation-only deprecation.
+-->
+
+Type: Documentation-only
+
+In future versions of Node.js, `fs.rmdir(path, { recursive: true })` will throw
+on nonexistent paths, or when given a file as a target.
+Use `fs.rm(path, { recursive: true, force: true })` instead.
+
 [Legacy URL API]: url.md#url_legacy_url_api
 [NIST SP 800-38D]: https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-38d.pdf
 [RFC 6066]: https://tools.ietf.org/html/rfc6066#section-3