docs: added Implement Customer Profiles documentation (#2910)

docs/content/advanced/backend/customers/index.md

@@ -73,4 +73,5 @@ The relation between the `Customer` and `Address` entities is available on both
 
 ## See Also
 
+- [Implement customer profiles in the storefront](../../storefront/customer-profiles.mdx)
 - Customers [Admin](/api/admin/#tag/Customer) and [Storefront](/api/store/#tag/Customer) API References