Обсуждение: pgsql: Doc: Update documentation for modifying postgres_fdw foreign tab

Doc: Update documentation for modifying postgres_fdw foreign tables.

Document that they can be modified using COPY as well.

Back-patch to v11 where commit 3d956d956 added support for COPY in
postgres_fdw.

Branch
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REL_14_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/a9e186da81d9965789b1a7ab869329eabe3595c3

Modified Files
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doc/src/sgml/postgres-fdw.sgml | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)