Merge pull request #815 from vasilevx/patch-1

Update task.md

Author: iliakan

1-js/05-data-types/07-map-set-weakmap-weakset/03-iterable-keys/task.md

@@ -16,7 +16,7 @@ map.set("name", "John");
 let keys = map.keys();
 
 *!*
-// Error: numbers.push is not a function
+// Error: keys.push is not a function
 keys.push("more");
 */!*
 ```