pgsql: Doc fix: scale(numeric) returns integer, not numeric.

Doc fix: scale(numeric) returns integer, not numeric.

Thinko in commit abb173392, which introduced this function.

Report: /messages/by-id/20170511215234.1795.54347@wrigleys.postgresql.org

Branch
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REL9_6_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/4d4cdc5065d3a5396c455af3d90b48c2be687319

Modified Files
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doc/src/sgml/func.sgml | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

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