docs: general fixes and improvements (#7918)

* docs improvements and changes

* updated module definition

* modules + dml changes

* fix build

* fix vale error

* fix lint errors

* fixes to stripe docs

* fix condition

* fix condition

* fix module defintion

* fix checkout

* disable UI action

* change oas preview action

* flatten provider module options

* fix lint errors

* add module link docs

* pr comments fixes

* fix vale error

* change node engine version

* links -> linkable

* add note about database name

* small fixes

* link fixes

* fix response code in api reference

* added migrations step

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

@@ -6,7 +6,7 @@ export const metadata = {
 
 In this chapter, you'll learn how subscribers receive an event's data payload.
 
-## How to Access Data Payload
+## Access Event's Data Payload
 
 When events are emitted, they’re emitted with a data payload. 
 
@@ -40,6 +40,8 @@ export const config: SubscriberConfig = {
 
 This logs the product ID received in the `product.created` event’s data payload to the console.
 
+---
+
 ## 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.