pgsql: Fix documentation for pgbench tpcb-like.

Fix documentation for pgbench tpcb-like.

We choose a random value for delta, not balance.  Back-patch to 9.6 where
the mistake arrived.

Author: Fabien Coelho
Discussion: https://postgr.es/m/alpine.DEB.2.21.1904081752210.5867@lancre

Branch
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REL_12_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/dd5e47a92cfce52e3e35233a33b190ea498eed84

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