pgsql: Fix comment in psql's describe.c

Fix comment in psql's describe.c

Procedures are supported since v11 and \dfp can be used since this
version, but it was not mentioned as a supported option in the
description of describeFunctions() which handles \df in psql.

Extracted from a larger patch.

Author: Fabien Coelho
Discussion: /messages/by-id/alpine.DEB.2.21.1908281618520.28828@lancre

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/8a0deae8d9b6861265cf4ebf25a9e4385f4c7672

Modified Files
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src/bin/psql/describe.c | 1 +
1 file changed, 1 insertion(+)