no need to "js run"

there is nothing to see when code is run. So run button for code can create some confusion.

1-js/04-object-basics/08-symbol/article.md

@@ -109,7 +109,7 @@ There will be no conflict between our and their identifiers, because symbols are
 
 ...But if we used a string `"id"` instead of a symbol for the same purpose, then there *would* be a conflict:
 
-```js run
+```js
 let user = { name: "John" };
 
 // Our script uses "id" property