doc: make EventEmitterAsyncResource's options as optional

Refs: https://github.com/nodejs/node/blob/main/lib/events.js#L140
PR-URL: #45985
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>

doc/api/events.md

@@ -1548,7 +1548,7 @@ Promise.resolve().then(() => {
 The `EventEmitterAsyncResource` class has the same methods and takes the
 same options as `EventEmitter` and `AsyncResource` themselves.
 
-### `new events.EventEmitterAsyncResource(options)`
+### `new events.EventEmitterAsyncResource([options])`
 
 * `options` {Object}
   * `captureRejections` {boolean} It enables