Add example for destructuring nested objects (#24133)

Also changed styling to be more consistent

guide/english/javascript/es6/destructuring/index.md

@@ -63,6 +63,16 @@ const {first: firstName, last: lastName} = fullName;
 
 console.log(firstName, lastName); // John Smith
 ```
+
+You can also use Destructuring on nested objects.
+
+```js
+const person = {firstName: "John", lastName: "Smith", address: {city: "Istanbul", country: "Turkey"}};
+const {address: {city, country}} = person;
+
+console.log(city, country); // Istanbul Turkey
+```
+
 **Array Destructuring with rest**
 
 When destructuring an array, you can unpack and assign the remaining part of it to a variable using the rest pattern: