Fixed Spelling error (#1249)
Fixed Spelling error (#1249)

Thanks for considering my activation function in your package. Just a small spelling error showed up.

Signed-off-by: digantamisra98 <589e5dfc86c8bbaf1a9465c970d0e8f84b3a2881@gmail.com>
Project-MONAI/MONAI,Project-MONAI/MONAI,Project-MONAI/MONAI,Project-MONAI/MONAI