Fix reference to function renamed in C API doc [DTK_destroyUserApplication()]
Fix reference to function renamed in C API doc [DTK_destroyUserApplication()]

Rombur/DataTransferKit,ORNL-CEES/DataTransferKit,ORNL-CEES/DataTransferKit,dalg24/DataTransferKit,Rombur/DataTransferKit,dalg24/DataTransferKit,ORNL-CEES/DataTransferKit,dalg24/DataTransferKit,Rombur/DataTransferKit,Rombur/DataTransferKit,dalg24/DataTransferKit,ORNL-CEES/DataTransferKit