EXCEPT TABLE - Case inconsistency for describe \d and \dRp+

Hi.

While experimenting with "CREATE PUBLICATION ... FOR ALL TABLES EXCEPT
(TABLE...)" I noticed a small "case" inconsistency.

Background: The \d and \dRp+ command were enhanced in commit fd36606
[1][2] to say what tables are excluded from what publications.

e.g.

# -- describe the publications
# \dRp+ pub1
                                                     Publication pub1
Owner   | All tables | All sequences | Inserts | Updates | Deletes |
Truncates | Generated columns | Via root | Description
----------+------------+---------------+---------+---------+---------+-----------+-------------------+----------+-------------
postgres | t          | f             | t       | t      | t       | t
        | none              | f        |

Except tables:
  "public.t1"
  "public.t2"

# \dRp+ pub2
                                                     Publication pub2
Owner   | All tables | All sequences | Inserts | Updates | Deletes |
Truncates | Generated columns | Via root | Description
----------+------------+---------------+---------+---------+---------+-----------+-------------------+----------+-------------
postgres | f          | f             | t       | t      | t       | t
        | none              | f        |
Tables:
  "public.t2"
  "public.t3"

# -- describe the tables
# \d t1
                Table "public.t1"
Column | Type   | Collation | Nullable | Default
--------+---------+-----------+----------+---------
a      | integer |           |          |
Except Publications:
  "pub1"

# \d t2
                Table "public.t2"
Column | Type   | Collation | Nullable | Default
--------+---------+-----------+----------+---------
a      | integer |           |          |

Publications:
  "pub2"
Except Publications:
  "pub1"

~~~

Notice that that the describe publication says:
"Tables:" and "Except tables:" (Lowercase "tables")

Notice that the describe table says:
"Publications:" and "Except Publications:"  (Uppercase "Publications")

I think they should use a consistent case:
eg1. (both lowercase) Except tables; Except publications, OR
eg2. (bother uppercase) Except Tables; Except Publications

~~~

I did not yet provide a patch because I was not sure which way
(uppercase/lowercase) is best, so wanted to hear some opinions about
that first.

(I'm expecting that some DOCS examples and/or TESTS for "describe"
will also be impacted).

Thoughts?

======
[1] https://github.com/postgres/postgres/commit/fd366065e06ae953c4f2d973d5c5f0474f3b87b6#diff-cdb325f8994210a4cfacc19525f11e9b368a3f78641b67105c105449df9b645cR6859
[2] https://github.com/postgres/postgres/commit/fd366065e06ae953c4f2d973d5c5f0474f3b87b6#diff-cdb325f8994210a4cfacc19525f11e9b368a3f78641b67105c105449df9b645cR3183

Kind Regards,
Peter Smith.
Fujitsu Australia