docs: add missing shipping_profile_id in create product snippets (#11443)

* initial

* add link

www/apps/book/app/learn/customization/extend-features/extend-create-product/page.mdx

@@ -237,7 +237,7 @@ curl -X POST 'http://localhost:9000/admin/products' \
 }'
 ```
 
-Make sure to replace `{token}` with the token you received from the previous request, `shipping_profile_id` with the ID of a shipping profile in your application, and `{brand_id}` with the ID of a brand in your application.
+Make sure to replace `{token}` with the token you received from the previous request, `shipping_profile_id` with the ID of a shipping profile in your application, and `{brand_id}` with the ID of a brand in your application. You can retrieve the ID of a shipping profile either from the Medusa Admin, or the [List Shipping Profiles API route](!api!/admin#shipping-profiles_getshippingprofiles).
 
 The request creates a product and returns it.
 

www/apps/book/app/learn/fundamentals/api-routes/additional-data/page.mdx

@@ -117,6 +117,7 @@ curl -X POST 'http://localhost:9000/admin/products' \
         "values": ["Default option value"]
       }
     ],
+    "shipping_profile_id": "{shipping_profile_id}",
     "additional_data": {
         "brand": "Acme"
     }
@@ -125,7 +126,7 @@ curl -X POST 'http://localhost:9000/admin/products' \
 
 <Note title="Tip">
 
-Make sure to replace the `{token}` in the authorization header with an admin user's authentication token.
+Make sure to replace the `{token}` in the authorization header with an admin user's authentication token, and `{shipping_profile_id}` with an existing shipping profile's ID.
 
 </Note>
 

www/apps/book/app/learn/fundamentals/custom-cli-scripts/seed-data/page.mdx

@@ -124,6 +124,7 @@ const productsData = new Array(productsNum).fill(0).map((_, index) => {
         Size: sizeOptions[Math.floor(Math.random() * 3)],
       },
     })),
+    shipping_profile_id: "sp_123",
     sales_channels: [
       {
         id: defaultSalesChannel[0].id,