Update documentation (output example section)
Update documentation (output example section)

saneyuki/power-assert,yagitoshiro/power-assert,twada/power-assert,falsandtru/power-assert,power-assert-js/power-assert,yagitoshiro/power-assert,saneyuki/power-assert,power-assert-js/power-assert,falsandtru/power-assert,twada/power-assert