minor

1-js/05-data-types/08-weakmap-weakset/article.md

@@ -155,7 +155,7 @@ We can avoid it by switching to `WeakMap` instead:
 
 ```js
 // 📁 visitsCount.js
-let visitsCountMap = new WeakMap(); // map: user => visits count
+let visitsCountMap = new WeakMap(); // weakmap: user => visits count
 
 // increase the visits count
 function countUser(user) {