correct typo
correct typo

tejasbubane/exercism.io,RaptorRCX/exercism.io,tejasbubane/exercism.io,RaptorRCX/exercism.io,treiff/exercism.io,tejasbubane/exercism.io,RaptorRCX/exercism.io,treiff/exercism.io,RaptorRCX/exercism.io,treiff/exercism.io,tejasbubane/exercism.io,treiff/exercism.io