pgsql: doc: PG 16 relnotes, update xid/subxid searches item

doc: PG 16 relnotes, update xid/subxid searches item

Reported-by: John Naylor

Discussion: /messages/by-id/CAFBsxsEPg8L2MmGqavc8JByC=WF_Mnkhn-KKnFPkcqh0hydung@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/a817edbf6f302c376f5c0012d19a0474b6bdea88

Modified Files
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doc/src/sgml/release-16.sgml | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)