pgsql: doc: remove double-negative in REFRESH MATERIALIZED ... CONCURR

doc: remove double-negative in REFRESH MATERIALIZED ... CONCURR

Reported-by: ap@robillo.net

Discussion: /messages/by-id/20170208152743.1411.6073@wrigleys.postgresql.org

Backpatch-through: master

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/1db5300015a778f51a26a8a0614fe7fcb6323c17

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