docs: general fixes and overall changes (#7258)

* editing halfway

* edited second half

* adjust starter steps

* fix build

* typo fix

www/apps/book/app/advanced-development/events-and-subscribers/data-payload/page.mdx

@@ -39,6 +39,8 @@ export const config: SubscriberConfig = {
 
 This logs the product ID received in the `ProductService.Events.CREATED` (`product-created`) event’s data payload to the console.
 
-## List of Events with Data Payload
+{/* TODO check first if the events list is still correct */}
 
-Refer to [this reference](!resources!/events-reference) for a full list of events emitted by Medusa and their data payloads.
+{/* ## List of Events with Data Payload
+
+Refer to [this reference](!resources!/events-reference) for a full list of events emitted by Medusa and their data payloads. */}