Fix typo
Fix typo

Thanks chi6rag!

KarthicK10/AND_Project_4_BuildItBigger,KarthicK10/AND_Project_4_BuildItBigger,SethsApps/ud867,SethsApps/ud867,Sushant-M/Joke_Telling_App,udacity/ud867,Sushant-M/Joke_Telling_App,udacity/ud867