pgsql: Minor docs wordsmithing.

Minor docs wordsmithing.

Swap the order of a couple of phrases to clarify what the adjective
"subsequent" applies to.

Joshua Tolley

Branch
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REL9_0_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/c9d9a220a3e66988397ba4cce8c8d229ca55fadf

Modified Files
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doc/src/sgml/ref/select.sgml | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

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