docs: fix links in extend product guide (#10472)

* docs: fix links in extend product guide

* fix links

www/apps/resources/app/commerce-modules/promotion/extend/page.mdx

@@ -28,7 +28,7 @@ Consider you have a Hello Module defined in the `/src/modules/hello` directory.
 
 <Note title="Tip">
 
-If you don't have a module, follow [this guide](!docs!/basics/modules) to create one.
+If you don't have a module, follow [this guide](!docs!/learn/basics/modules) to create one.
 
 </Note>
 
@@ -49,7 +49,7 @@ This creates a `Custom` data model that has the `id` and `custom_name` propertie
 
 <Note title="Tip">
 
-Learn more about data models in [this guide](!docs!/data-models).
+Learn more about data models in [this guide](!docs!/learn/basics/modules#1-create-data-model).
 
 </Note>
 
@@ -61,7 +61,7 @@ Next, you'll define a module link between the `Custom` and `Promotion` data mode
 
 <Note title="Tip">
 
-Learn more about module links in [this guide](!docs!/module-links).
+Learn more about module links in [this guide](!docs!/learn/advanced-development/module-links).
 
 </Note>
 
@@ -88,7 +88,7 @@ This defines a link between the `Promotion` and `Custom` data models. Using this
   items={[
     {
       text: "Module must be registered in medusa-config.js",
-      link: "!docs!/basics/modules#4-add-module-to-configurations"
+      link: "!docs!/learn/basics/modules#4-add-module-to-configurations"
     }
   ]}
 />