async_hooks,doc: replace process.stdout.fd with 1

This stops "RangeError: Maximum call stack size exceeded". PR-URL: #38382 Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>

Author: RaisinTen

doc/api/async_hooks.md

@@ -271,16 +271,18 @@ created, while `triggerAsyncId` shows *why* a resource was created.
 The following is a simple demonstration of `triggerAsyncId`:
 
 ```js
+const { fd } = process.stdout;
+
 async_hooks.createHook({
  init(asyncId, type, triggerAsyncId) {
  const eid = async_hooks.executionAsyncId();
  fs.writeSync(
- process.stdout.fd,
+ fd,
  `${type}(${asyncId}): trigger: ${triggerAsyncId} execution: ${eid}\n`);
  }
 }).enable();
 
-require('net').createServer((conn) => {}).listen(8080);
+net.createServer((conn) => {}).listen(8080);
 ```
 
 Output when hitting the server with `nc localhost 8080`:
@@ -322,33 +324,35 @@ callback to `listen()` will look like. The output formatting is slightly more
 elaborate to make calling context easier to see.
 
 ```js
+const { fd } = process.stdout;
+
 let indent = 0;
 async_hooks.createHook({
  init(asyncId, type, triggerAsyncId) {
  const eid = async_hooks.executionAsyncId();
  const indentStr = ' '.repeat(indent);
  fs.writeSync(
- process.stdout.fd,
+ fd,
  `${indentStr}${type}(${asyncId}):` +
  ` trigger: ${triggerAsyncId} execution: ${eid}\n`);
  },
  before(asyncId) {
  const indentStr = ' '.repeat(indent);
- fs.writeSync(process.stdout.fd, `${indentStr}before: ${asyncId}\n`);
+ fs.writeSync(fd, `${indentStr}before: ${asyncId}\n`);
  indent += 2;
  },
  after(asyncId) {
  indent -= 2;
  const indentStr = ' '.repeat(indent);
- fs.writeSync(process.stdout.fd, `${indentStr}after: ${asyncId}\n`);
+ fs.writeSync(fd, `${indentStr}after: ${asyncId}\n`);
  },
  destroy(asyncId) {
  const indentStr = ' '.repeat(indent);
- fs.writeSync(process.stdout.fd, `${indentStr}destroy: ${asyncId}\n`);
+ fs.writeSync(fd, `${indentStr}destroy: ${asyncId}\n`);
  },
 }).enable();
 
-require('net').createServer(() => {}).listen(8080, () => {
+net.createServer(() => {}).listen(8080, () => {
  // Let's wait 10ms before logging the server started.
  setTimeout(() => {
  console.log('>>>', async_hooks.executionAsyncId());