fix typo that leads to genning too many images
fix typo that leads to genning too many images

trailbehind/DeepOSM,trailbehind/DeepOSM,andrewljohnson/Deep-Trails,silberman/Deep-OSM,andrewljohnson/Deep-Trails,trailbehind/DeepOSM,silberman/Deep-OSM,andrewljohnson/Deep-Trails