docs(website): add missing "the"

Because `backetItems` is a specific group, we preface it with the definite article "the".

Refs: https://gallaudet.edu/student-success/tutorial-center/english-center/grammar-and-vocabulary/definite-and-indefinite-articles/a-an-the-general-or-specific/

Author: TurekBot

src/docs/handbook/web-testing/page-element-query-language.md

@@ -551,7 +551,7 @@ await actorCalled('Alice').attemptsTo(
 ```
 
 Where this pattern becomes indispensable is when you start **reusing** and **composing several meta-questions together**.
-For example, you could map each of `basketItems()` to retrieve their name or price:
+For example, you could map each of the `basketItems()` to retrieve their name or price:
 
 ```typescript
 import { actorCalled } from '@serenity-js/core'