Merge pull request #3020 from Nayoung-Gu/patch-1

just add a comma

Author: iliakan

1-js/04-object-basics/04-object-methods/article.md

@@ -90,7 +90,7 @@ user = {
 
 As demonstrated, we can omit `"function"` and just write `sayHi()`.
 
-To tell the truth, the notations are not fully identical. There are subtle differences related to object inheritance (to be covered later), but for now they do not matter. In almost all cases the shorter syntax is preferred.
+To tell the truth, the notations are not fully identical. There are subtle differences related to object inheritance (to be covered later), but for now they do not matter. In almost all cases, the shorter syntax is preferred.
 
 ## "this" in methods