It could be neither. it is minor leaf damage that might be the result of a temp variance, humidity problems, insect nibbling, rough handling, or just plain normal brushing of leaves together in the breeze.
the leaves look like they are the right color, and the growth is full and lush. unless that plant is like 2 months old, or more, then youre doing just fine.
unless it gets worse of course, then is prolly nute burn.
deficiencies usually show up as spotty patches or discoloration, not leaf damage until it gets really bad and the plant is starving to death.