Put type modifier between parentheses and quotes

[M-Butter]

The type modifier (if any) for a collection or icollection is specified as the text representation of a data type, like:
collection('text')
But when displaying the type, it showed as collectiontext instead of collection('text').

Issue #, if available:

Description of changes:

With definitions:

postgres=# create schema typemodtest;
CREATE SCHEMA
postgres=# create type typemodtest.my_rec as (
        coll_no_typemod              collection,
        coll_typemod_int             collection('int'),
        icoll_no_typemod             icollection,
        icollection_typemod_varchar  icollection('varchar')
);
CREATE TYPE

the type definition shows as:

postgres=# \d typemodtest.my_rec
                             Composite type "typemodtest.my_rec"
           Column            |             Type             | Collation | Nullable | Default 
-----------------------------+------------------------------+-----------+----------+---------
 coll_no_typemod             | collection                   |           |          | 
 coll_typemod_int            | collectioninteger            |           |          | 
 icoll_no_typemod            | icollection                  |           |          | 
 icollection_typemod_varchar | icollectioncharacter varying |           |          | 

but should show as:

postgres=# \d typemodtest.my_rec
                               Composite type "typemodtest.my_rec"
           Column            |               Type               | Collation | Nullable | Default 
-----------------------------+----------------------------------+-----------+----------+---------
 coll_no_typemod             | collection                       |           |          | 
 coll_typemod_int            | collection('integer')            |           |          | 
 icoll_no_typemod            | icollection                      |           |          | 
 icollection_typemod_varchar | icollection('character varying') |           |          | 

That is what this pull request is about.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.