docs: revise main docs outline (#10502)

www/apps/resources/app/recipes/subscriptions/page.mdx

@@ -33,13 +33,13 @@ You can link the subscription data model to models of other modules, such as the
 
 <CardList items={[
   {
-    href: "!docs!/learn/basics/modules",
+    href: "!docs!/learn/fundamentals/modules",
     title: "Create a Module",
     text: "Learn how to create a module.",
     icon: AcademicCapSolid,
   },
   {
-    href: "!docs!/learn/basics/modules#1-create-data-model",
+    href: "!docs!/learn/fundamentals/modules#1-create-data-model",
     title: "Create a Data Model",
     text: "Learn how to create a data model.",
     icon: AcademicCapSolid,
@@ -57,7 +57,7 @@ For example, you can link the subscription data model to the Order Module's `Ord
 If you want to create subscriptions on the product level, you can link the subscription data model to the Product Module's `Product` data model.
 
 <Card
-  href="!docs!/learn/advanced-development/module-links"
+  href="!docs!/learn/fundamentals/module-links"
   title="Define a Module Link"
   text="Learn how to define a module link."
   icon={AcademicCapSolid}
@@ -81,13 +81,13 @@ Implementing the logic depends on your use case, but you'll mainly implement the
 
 <CardList itemsPerRow={2} items={[
   {
-    href: "!docs!/learn/basics/api-routes",
+    href: "!docs!/learn/fundamentals/api-routes",
     title: "Create an API Route",
     text: "Learn how to create an API route.",
     icon: AcademicCapSolid,
   },
   {
-    href: "!docs!/learn/basics/scheduled-jobs",
+    href: "!docs!/learn/fundamentals/scheduled-jobs",
     title: "Create a Scheduled Job",
     text: "Learn how to create a scheduled job.",
     icon: AcademicCapSolid,
@@ -119,13 +119,13 @@ Extend the Medusa Admin to add widgets to existing pages or add new pages.
 
 <CardList items={[
   {
-    href: "!docs!/learn/advanced-development/admin/widgets",
+    href: "!docs!/learn/fundamentals/admin/widgets",
     title: "Create Admin Widget",
     text: "Learn how to add widgets into existing admin pages.",
     icon: AcademicCapSolid,
   },
   {
-    href: "!docs!/learn/advanced-development/admin/ui-routes",
+    href: "!docs!/learn/fundamentals/admin/ui-routes",
     title: "Create Admin UI Routes",
     text: "Learn how to add new pages to your Medusa Admin.",
     icon: AcademicCapSolid,