doc: fix typo in release notes
Backpatch through 8.4
Per suggestion by Amit Langote
Branch
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REL9_0_STABLE
Details
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http://git.postgresql.org/pg/commitdiff/ca4967903dff9e7ac86d4a146a4aebc9046009b0
Modified Files
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doc/src/sgml/release-8.4.sgml | 4 ++--
doc/src/sgml/release-9.0.sgml | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)