slight name change

To Me the notion of "Bayesian regret" is something which has the same
name for both the singular and the plural form, like oxygen. While One
may speak of "Bayesian regret *values*", analogous to "oxygen
molecules", One would not speak of "Bayesian regrets" any more than
One would speak of "oxygens".
speed tweak and commentary clean up for improving 'PrintTheVotersBayesianRegret()' readibility
making 'PrintOneSetOfTheVotersBayesianRegret()' more readible and correcting a comment