pgsql: Remove parentheses from mention of current_schemas function.

Remove parentheses from mention of current_schemas function.

This is more consistent with what we do elsewhere, and hopefully avoids
creating the perception that current_schemas takes no arguments.

As suggested by Brendan Jurd

Branch
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REL9_1_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/20c73f3a327d2289871e7701e8325e5e3ebe518c

Modified Files
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doc/src/sgml/config.sgml |    4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)