pgsql: Further tidy up on json aggregate documentation

Further tidy up on json aggregate documentation

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/2a3f2743f200dbcdd412a00ff69f30d3e34b662b

Modified Files
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doc/src/sgml/func.sgml | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

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