doc: links and tweaks

src/registry.rs

@@ -410,7 +410,7 @@ pub fn whereis(name: &str) -> Option<Pid> {
 
 /// Resolve `name` to a *typed* [`Pid<A>`] — the identity-bound counterpart of
 /// [`whereis`] (RFC 014 §4.4). Recovers the compile-checked
-/// [`send_to`](crate::send_to) path from a durable name: looks the name up,
+/// [`send_to`] path from a durable name: looks the name up,
 /// then re-types the erased pid as `Pid<A>` via the unchecked
 /// [`assert_type`](crate::pid::assert_type) primitive. A wrong `A` is not
 /// unsound — it degrades to [`SendError::NoChannel`] on the next send (routing