doc: fix typo of built-in module specifier in worker_threads

node:: -> node:
PR-URL: #59992
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Daeyeon Jeong <daeyeon.dev@gmail.com>
Reviewed-By: Ulises Gascón <ulisesgascongonzalez@gmail.com>

Author: deokjinkim

doc/api/worker_threads.md

@@ -1983,10 +1983,10 @@ worker.on('online', async () => {
 `await using` example.
 
 ```cjs
-const { Worker } = require('node::worker_threads');
+const { Worker } = require('node:worker_threads');
 
 const w = new Worker(`
-  const { parentPort } = require('worker_threads');
+  const { parentPort } = require('node:worker_threads');
   parentPort.on('message', () => {});
   `, { eval: true });
 
@@ -2026,10 +2026,10 @@ worker.on('online', async () => {
 `await using` example.
 
 ```cjs
-const { Worker } = require('node::worker_threads');
+const { Worker } = require('node:worker_threads');
 
 const w = new Worker(`
-  const { parentPort } = require('worker_threads');
+  const { parentPort } = require('node:worker_threads');
   parentPort.on('message', () => {});
   `, { eval: true });