Re: pgbench doc typos

Hello Edmund,

Thanks for the check. You might consider turning the patch as ready in the 
cf app.

> Fixing the abs/hash bracketing seems clear.  The wasn't sure about 
> rewriting "mod(i, bj)" as "mod(i, j)", because there could be some 
> convention about parameter names, but I can't think of anything the "b" 
> could be in the case of mod.

Might be a left-over a previous version which might have used MOD(a, b), 
but a/b are rather used for fp numbers and i/j for integers.

-- 
Fabien.