Documentation: warn about two_phase when altering a subscription

When Who What
2024-03-11 04:06:31 Amit Kapila (amitkapila) Closed in commitfest 2024-03 with status: Committed
2024-03-11 04:06:31 Amit Kapila (amitkapila) Changed committer to amitkapila
2024-02-23 23:50:17 Tristen Raab (tristenr) Posted review with messageid <170873221735.1111.647062867541274531.pgcf@coridan.postgresql.org>
2024-01-30 15:46:45 Bertrand Drouvot (bertranddrouvot.pg) Changed authors to Bertrand Drouvot (bertranddrouvot.pg)
2024-01-30 15:46:45 Bertrand Drouvot (bertranddrouvot.pg) Changed targetversion to 17
2024-01-30 15:46:27 Bertrand Drouvot (bertranddrouvot.pg) Attached mail thread ZbkYrLPhH+RxpZlW@ip-10-97-1-34.eu-west-3.compute.internal
2024-01-30 15:46:27 Bertrand Drouvot (bertranddrouvot.pg) Created patch record