Обсуждение: pgsql: Document units for max_slot_wal_keep_size

Document units for max_slot_wal_keep_size

The doc blurb failed to mention units, as well as lacking the point
about changeability.

Backpatch to 13.

Reviewed-by: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Reported by: b1000101@pm.me
Discussion: https://postgr.es/m/163760291192.26193.10801700492025355788@wrigleys.postgresql.org

Branch
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REL_14_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/2187a229410f12168d48eb41fce22ba348b2b757

Modified Files
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doc/src/sgml/config.sgml | 3 +++
1 file changed, 3 insertions(+)