Merge pull request #3022 from joaquinelio/patch-14

minor change

Author: iliakan

1-js/04-object-basics/03-garbage-collection/article.md

@@ -74,7 +74,7 @@ Now if we do the same:
 user = null;
 ```
 
-...Then the object is still reachable via `admin` global variable, so it's in memory. If we overwrite `admin` too, then it can be removed.
+...Then the object is still reachable via `admin` global variable, so it must stay in memory. If we overwrite `admin` too, then it can be removed.
 
 ## Interlinked objects