Update article.md

1-js/04-object-basics/07-optional-chaining/article.md

@@ -79,7 +79,7 @@ The optional chaining `?.` stops the evaluation if the part before `?.` is `unde
 **Further in this article, for brevity, we'll be saying that something "exists" if it's not `null` and not `undefined`.**
 
 In other words, `value?.prop`:
-- returns `value.prop` if `value` exists (just like `value.prop`),
+- is the same as `value.prop` if `value` exists,
 - otherwise (when `value` is `undefined/null`) it returns that `value`.
 
 Here's the safe way to access `user.address.street` using `?.`: