doc sql-grant.html Synopsis error?

[jian he <jian.universality@xxxxxxxxx>]

Hi.

--work as intended.

grant ALL PRIVILEGES on FUNCTION pg_catalog.pg_reload_conf() to test;
grant ALL PRIVILEGES on FUNCTION pg_reload_conf() to test;

-------------errors. it should be work, or I interpret the doc the wrong way?

GRANT ALL PRIVILEGES ON FUNCTION pg_reload_conf() IN SCHEMA pg_catalog TO test;
GRANT ALL PRIVILEGES ON FUNCTION pg_catalog.pg_reload_conf() IN SCHEMA pg_catalog TO test;

doc: https://www.postgresql.org/docs/current/sql-grant.html

GRANT { EXECUTE | ALL [ PRIVILEGES ] }
    ON { { FUNCTION | PROCEDURE | ROUTINE } routine_name [ ( [ [ argmode ] [ arg_name ] arg_type [, ...] ] ) ] [, ...]
         | ALL { FUNCTIONS | PROCEDURES | ROUTINES } IN SCHEMA schema_name [, ...] }
    TO role_specification [, ...] [ WITH GRANT OPTION ]
    [ GRANTED BY role_specification ]

I am using postgres 16, but the grant function part does not change.

What did I miss?