doc: update output of example in events.getEventListeners

Update mismatched output of `events.getEventListeners` example.
Plus, show output using console.log.

PR-URL: #46268
Reviewed-By: Antoine du Hamel <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: James M Snell <[email protected]>

Author: deokjinkim

doc/api/events.md

@@ -1232,13 +1232,13 @@ import { getEventListeners, EventEmitter } from 'node:events';
   const ee = new EventEmitter();
   const listener = () => console.log('Events are fun');
   ee.on('foo', listener);
-  getEventListeners(ee, 'foo'); // [listener]
+  console.log(getEventListeners(ee, 'foo')); // [ [Function: listener] ]
 }
 {
   const et = new EventTarget();
   const listener = () => console.log('Events are fun');
   et.addEventListener('foo', listener);
-  getEventListeners(et, 'foo'); // [listener]
+  console.log(getEventListeners(et, 'foo')); // [ [Function: listener] ]
 }
 ```
 
@@ -1249,13 +1249,13 @@ const { getEventListeners, EventEmitter } = require('node:events');
   const ee = new EventEmitter();
   const listener = () => console.log('Events are fun');
   ee.on('foo', listener);
-  getEventListeners(ee, 'foo'); // [listener]
+  console.log(getEventListeners(ee, 'foo')); // [ [Function: listener] ]
 }
 {
   const et = new EventTarget();
   const listener = () => console.log('Events are fun');
   et.addEventListener('foo', listener);
-  getEventListeners(et, 'foo'); // [listener]
+  console.log(getEventListeners(et, 'foo')); // [ [Function: listener] ]
 }
 ```