images in waterfal/{before|after} are actually PNG despite of their extension ".jpg"

[graphicore]

Just discovered this because my image viewer didn't want to open these stating e.g.:

Could not load image “Desktop_OS_X_High_Sierra_safari11.1.jpg”.

Error interpreting JPEG image file (Not a JPEG file: starts with 0x89 0x50)

And file says they are PNG

$ find waterfall/ -type f | grep jpg | file -f -
waterfall/before/Desktop_Windows_10_chrome_69.0_.jpg: PNG image data, 1024 x 2333, 8-bit/color RGB, non-interlaced
waterfall/before/Desktop_Windows_10_firefox_62.0_.jpg: PNG image data, 1024 x 2329, 8-bit/color RGB, non-interlaced
waterfall/before/Desktop_OS_X_High_Sierra_safari_11.1_.jpg: PNG image data, 1009 x 2305, 8-bit/color RGBA, non-interlaced
waterfall/after/Desktop_Windows_10_chrome_69.0_.jpg: PNG image data, 1024 x 2333, 8-bit/color RGB, non-interlaced
waterfall/after/Desktop_Windows_10_firefox_62.0_.jpg: PNG image data, 1024 x 2329, 8-bit/color RGB, non-interlaced
waterfall/after/Desktop_OS_X_High_Sierra_safari_11.1_.jpg: PNG image data, 1024 x 2305, 8-bit/color RGBA, non-interlaced

[davelab6]

@m4rc1e is this fixed? Seems trivial