million game - updated instructions

src/main/quizproject.c

@@ -762,6 +762,7 @@ void million_instructions(){
     printf("To use Fifty/Fifty Lifeline, Enter F\n");
     printf("To ask a Friend for help, Enter P\n");
     printf("To ask the Host for advice, Enter H\n");
+    printf("Two checkpoints exist. You will fall back to them if you passed them before failing a question\n");
     printf("-------------------INSTRUCTIONS--------------------\n");
 }