docs: added restock notification guide (#10413)

* docs: added restock notification guide

* changes

* lint fixes

* fixes

* more changes

* remove get email step

* add og image

* update sendRestockNotificationsWorkflow

* updates

* fix links

www/apps/resources/app/storefront-development/products/categories/nested-categories/page.mdx

@@ -29,7 +29,7 @@ export const fetchHighlights = [
   const searchParams = new URLSearchParams({
     fields: "category_children.id,category_children.name",
     include_descendants_tree: true,
-    parent_category_id: null
+    parent_category_id: null,
   })
 
   fetch(`http://localhost:9000/store/product-categories/${id}?${
@@ -84,7 +84,7 @@ export const highlights = [
 
       const searchParams = new URLSearchParams({
         fields: "category_children.id,category_children.name",
-        parent_category_id: null
+        parent_category_id: null,
       })
 
       fetch(`http://localhost:9000/store/product-categories/${id}?${