doc: mark modules implementation as stable

PR-URL: #35781
Backport-PR-URL: #37718
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Myles Borins <myles.borins@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Derek Lewis <DerekNonGeneric@inf.is>

Author: guybedford

doc/api/esm.md

@@ -5,6 +5,10 @@
 <!-- YAML
 added: v8.5.0
 changes:
+  - version:
+    - REPLACEME
+    pr-url: https://github.com/nodejs/node/pull/35781
+    description: Stabilize modules implementation.
   - version:
     - v12.20.0
     pr-url: https://github.com/nodejs/node/pull/35249
@@ -23,7 +27,7 @@ changes:
       `"type"` field.
 -->
 
-> Stability: 1 - Experimental
+> Stability: 2 - Stable
 
 ## Introduction
 
@@ -55,15 +59,9 @@ console.log(addTwo(4));
 ```
 
 Node.js fully supports ECMAScript modules as they are currently specified and
-provides limited interoperability between them and the existing module format,
+provides interoperability between them and its original module format,
 [CommonJS][].
 
-Node.js contains support for ES Modules based upon the
-[Node.js EP for ES Modules][] and the [ECMAScript-modules implementation][].
-
-Expect major changes in the implementation including interoperability support,
-specifier resolution, and default behavior.
-
 <!-- Anchors to make sure old links find a target -->
 <i id="#esm_package_json_type_field"></i>
 <i id="#esm_package_scope_and_file_extensions"></i>
@@ -1268,9 +1266,7 @@ success!
 [CommonJS]: modules.html
 [Conditional exports]: packages.html#packages_conditional_exports
 [Dynamic `import()`]: https://wiki.developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/import#Dynamic_Imports
-[ECMAScript-modules implementation]: https://github.com/nodejs/modules/blob/master/doc/plan-for-new-modules-implementation.md
 [ES Module Integration Proposal for Web Assembly]: https://github.com/webassembly/esm-integration
-[Node.js EP for ES Modules]: https://github.com/nodejs/node-eps/blob/master/002-es-modules.md
 [Terminology]: #esm_terminology
 [WHATWG JSON modules specification]: https://html.spec.whatwg.org/#creating-a-json-module-script
 [`data:` URLs]: https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs