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/modules/container/page.mdx

@@ -42,12 +42,11 @@ export default class HelloModuleService {
 
   // ...
 }
-
 ```
 
 ### Loader
 
-A loader function in a module accepts as a parameter an object having the property `container`. Its value is the module's container used to resolve resources.
+A loader function accepts as a parameter an object having the property `container`. Its value is the module's container used to resolve resources.
 
 For example:
 
@@ -64,5 +63,4 @@ export default function helloWorldLoader({
 
   logger.info("[helloWorldLoader]: Hello, World!")
 }
-
 ```