pgsql: Fix documented return type of json_array_elements_text.

Fix documented return type of json_array_elements_text.

Per gripe from hubert depesz lubaczewski.

Also improve examples for this and json_array_elements so they match the
example results.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/e9afdf2f4bddb9d3a5a09aa8eff7fcc49db231d2

Modified Files
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doc/src/sgml/func.sgml |    6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)