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/resources/app/architectural-modules/event/create/page.mdx

@@ -88,12 +88,13 @@ class MyEventService extends AbstractEventBusModuleService {
 
 Create the file `src/modules/my-event/index.ts` with the following content:
 
-```ts
+```ts title="src/modules/my-event/index.ts"
 import MyEventService from "./service"
+import { Module } from "@medusajs/utils"
 
-export default {
+export default Module("my-event", {
   service: MyEventService,
-}
+})
 ```
 
 This exports the module's definition, indicating that the `MyEventService` is the main service of the module.
@@ -107,7 +108,7 @@ To use your Event Module, add it to the `modules` object exported as part of the
 For example:
 
 ```js title="medusa-config.js"
-const { Modules } = require("@medusajs/modules-sdk")
+import { Modules } from "@medusajs/utils"
 
 // ...