Fix storing of image files to store in correct directory
Fix storing of image files to store in correct directory

The default values in birdfeeder.sh work correctly for storing
results.log _inside_ of sdcard_directory.  But there is a typo of a
missing dir separator for storing the images.  So they were incorrectly
being stored one level up from their intended location and with an
incorrect name.

google-coral/project-birdfeeder,google-coral/project-birdfeeder