Fix Pandora-related documentation
Fix Pandora-related documentation

`unlimited` breaks the config parser, but `unlimited()` works pretty well.
netortik/yandex-tank,nettorta/yandex-tank,nettorta/yandex-tank,f2nd/yandex-tank,netortik/yandex-tank,fomars/yandex-tank,nnugumanov/yandex-tank,yandex/yandex-tank,f2nd/yandex-tank,fomars/yandex-tank,nnugumanov/yandex-tank,yandex/yandex-tank