message: Update builtin_maps.rst
diff: @@ -170,7 +170,7 @@ Service identity and status.
  graph TB;
  Opening-- transition_service_to_open -->Open;
  - Opening-- transition_service_to_open (recovery)-->WaitingForRecoveryShares;
  + Opening-- "transition_service_to_open (recovery)"-->WaitingForRecoveryShares;
  WaitingForRecoveryShares -- member shares reassembly--> Open;
  ``service.config``
  