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/data-models/page.mdx

@@ -0,0 +1,13 @@
+export const metadata = {
+  title: `${pageNumber} Data Models`,
+}
+
+# {metadata.title}
+
+In the next chapters, you'll learn more about creating data models, including property types, relationships, and more.
+
+<Note type="soon" title="Important">
+
+Data models are in active development and may change.
+
+</Note>