pgsql: doc PG 17 relnotes: update to current

doc PG 17 relnotes: update to current

Backpatch-through: 17 only

Branch
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REL_17_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/54497e0ed8670f52ceb8dfc5949023a61daeec59

Modified Files
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doc/src/sgml/release-17.sgml | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)