Missing restriction with foreign keys referencing partitioned tables

PG 12 added this feature, mentioned in the release notes:

Allow <link linkend="ddl-constraints-fk">foreign keys</link>
to reference partitioned tables (�lvaro Herrera)

When I wrote the original release notes in commit bdf595adbc, I had a
text description of "LIMITATIONS?". Unfortunately, those limitations
were not added to the release notes, and I can't even find where the
restriction is mentioned.

How should this be improved?

--
Bruce Momjian <bruce@momjian.us> http://momjian.us
EnterpriseDB http://enterprisedb.com

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