doc: fix callback example import in fs docs

Author: Rawal27

doc/api/fs.md

@@ -8790,7 +8790,7 @@ rename('/tmp/hello', '/tmp/world', (err) => {
 ```
 
 ```cjs
-const { rename, stat } = require('node:fs/promises');
+const { rename, stat } = require('node:fs');
 
 rename('/tmp/hello', '/tmp/world', (err) => {
   if (err) throw err;