learn(promises): update fs/promises example (#7763)

* Update discover-promises-in-nodejs.md

Signed-off-by: Vishal Kumar Gupta <groupsvkg@gmail.com>

* Update discover-promises-in-nodejs.md

Signed-off-by: Vishal Kumar Gupta <groupsvkg@gmail.com>

---------

Signed-off-by: Vishal Kumar Gupta <groupsvkg@gmail.com>

Author: groupsvkg

apps/site/pages/en/learn/asynchronous-work/discover-promises-in-nodejs.md

@@ -175,7 +175,7 @@ async function readFile() {
 readFile();
 ```
 
-In this example, `fs.promises.readFile()` returns a Promise, which we handle using `async/await` syntax to read the contents of a file asynchronously.
+In this example, `fs.readFile()` returns a Promise, which we handle using `async/await` syntax to read the contents of a file asynchronously.
 
 ## Advanced Promise Methods