docs: update for new crate layout

crates/application/src/users/get_federated_profile_stats.rs

@@ -1,5 +1,5 @@
 //! The federated half of the former `get_profile` (ADR-0004's closed wart).
-//! `build_federated_profile_response` (`handlers/users.rs`) calls this with a
+//! `build_federated_profile_response` (`http-axum/src/api/user_profile.rs`) calls this with a
 //! synthetic `user_id` that has no row in the local `users` table — a federated
 //! actor's identity is built entirely from the resolved `FederatedProfile`, so
 //! this type carries no `identity` field at all: the old `get_profile` computed