has_composite is missing a (name, name) variant

[nasbyj]

Users have no choice but to supply a description if they want to specify a schema.

                            List of functions
 Schema |     Name      | Result data type | Argument data types |  Type
--------+---------------+------------------+---------------------+--------
 tap    | has_composite | text             | name                | normal
 tap    | has_composite | text             | name, name, text    | normal
 tap    | has_composite | text             | name, text          | normal
(3 rows)