pgsql: Update C++ release note item wording.
Log Message:
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Update C++ release note item wording.
Modified Files:
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pgsql/doc/src/sgml:
release-9.0.sgml (r2.23 -> r2.24)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/release-9.0.sgml?r1=2.23&r2=2.24)