doc: consolidate history table of CustomEvent

PR-URL: nodejs#55758
Fixes: nodejs#55733
Refs: nodejs#55733
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Daeyeon Jeong <daeyeon.dev@gmail.com>

Author: geeksilva97

doc/api/events.md

@@ -2425,9 +2425,14 @@ added:
   - v18.7.0
   - v16.17.0
 changes:
-  - version: v22.1.0
+  - version:
+    - v22.1.0
+    - v20.13.0
     pr-url: https://github.com/nodejs/node/pull/52618
     description: CustomEvent is now stable.
+  - version: v19.0.0
+    pr-url: https://github.com/nodejs/node/pull/44860
+    description: No longer behind `--experimental-global-customevent` CLI flag.
 -->
 
 > Stability: 2 - Stable

doc/api/globals.md

@@ -416,13 +416,17 @@ added:
   - v18.7.0
   - v16.17.0
 changes:
+  - version:
+    - v22.1.0
+    - v20.13.0
+    pr-url: https://github.com/nodejs/node/pull/52618
+    description: CustomEvent is now stable.
   - version: v19.0.0
     pr-url: https://github.com/nodejs/node/pull/44860
     description: No longer behind `--experimental-global-customevent` CLI flag.
 -->
 
-> Stability: 1 - Experimental. Disable this API with the
-> [`--no-experimental-global-customevent`][] CLI flag.
+> Stability: 2 - Stable
 
 <!-- type=global -->