Update images for examples
Created by: lcy-seso
Some images in the Paddle Models repo should be redrawn (There are directly from the Internet (we add the reference, however, this may not be enough.)) :
- https://github.com/PaddlePaddle/models/blob/develop/ctr/images/wide_deep.png
- https://github.com/PaddlePaddle/models/blob/develop/mt_with_external_memory/image/lstm_c_state.png
- https://github.com/PaddlePaddle/models/blob/develop/mt_with_external_memory/image/turing_machine_cartoon.gif
- images in this directory: https://github.com/PaddlePaddle/models/tree/develop/dssm/images
- https://github.com/PaddlePaddle/models/blob/develop/scene_text_recognition/images/ctc.png
- https://github.com/PaddlePaddle/models/blob/develop/scene_text_recognition/images/feature_vector.png
- https://github.com/PaddlePaddle/models/blob/develop/scene_text_recognition/images/transcription.png