Updated Run JavaScript before change detection (markdown)

Run-JavaScript-before-change-detection.md

@@ -61,7 +61,7 @@ setInterval(function(){
 },1000);
 ```
 
-"**CSS/JSON/XPATH Filter**" to `.shop-sku-list-item`
+"**CSS/JSON/XPATH Filter**" to `.shop-sku-list-item` (to just extract the product prices and price+description)
 
 "**Remove Elements**" (optional, to cut down noise) to 
 ```