Update opencv-keras.md
Update opencv-keras.md
googlecreativelab/teachablemachine-community,googlecreativelab/teachablemachine-community,googlecreativelab/teachablemachine-community,googlecreativelab/teachablemachine-community,googlecreativelab/teachablemachine-community,googlecreativelab/teachablemachine-community,googlecreativelab/teachablemachine-community