pgsql: relnotes: mention non-exclusive backup mode was deprecated

relnotes: mention non-exclusive backup mode was deprecated

Reported-by: Ian Lawrence Barwick

Discussion: /messages/by-id/CAB8KJ=j9VhsFXuN+xv5qzxQV7gj-6TKqqwVLSgz5zU7F8nHCYw@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/6bfecf33f6ed558deee4f801e296b058261dbef3

Modified Files
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doc/src/sgml/release-15.sgml | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)