docs: add line highlight validation (#14380)

* docs: add line highlight validation

* add to all projects

* fixes

* fixes

* fix

* fixes

www/apps/resources/app/storefront-development/guides/express-checkout/page.mdx

@@ -1350,7 +1350,7 @@ Then, replace the `TODO` in the `Product` component with the following:
 export const productHighlights4 = [
   ["1", "price", "The formatted price to show to the customer."],
   ["2", "selectedVariantPrice", "Determine the variant to show its price, which is either the selected variant or the variant with the smallest price."],
-  ["29", "formatPrice", "Return the formatted price using the utility you created."]
+  ["19", "formatPrice", "Return the formatted price using the utility you created."]
 ]
 
 ```tsx title="components/Product/index.tsx" highlights={productHighlights4}
@@ -2049,7 +2049,7 @@ export const shippingHighlights3 = [
   ["7", "filter", "Retrieve shipping options with calculated prices only."],
   ["9", "fetch", "Retrieve the calculated price from the Medusa application."],
   ["24", "Promise.allSettled", "Wait for all calculated prices to be retrieved."],
-  ["13", "setCalculatedPrices", "Set the calculated prices in the state variable."],
+  ["33", "setCalculatedPrices", "Set the calculated prices in the state variable."],
 ]
 
 ```tsx title="components/Shipping/index.tsx" highlights={shippingHighlights3}