Fix another typo in comment
Fix another typo in comment

jeremiahyan/ResearchKit,jeremiahyan/ResearchKit,jeremiahyan/ResearchKit,md0u80c9/ResearchKit,md0u80c9/ResearchKit,md0u80c9/ResearchKit,chb/ResearchKit,chb/ResearchKit,mluedke2/ResearchKit,mluedke2/ResearchKit,chb/ResearchKit,mluedke2/ResearchKit,md0u80c9/ResearchKit,chb/ResearchKit