Update README.md

Author: anujshah1003

README.md

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 The video tutorial for Transfer learning with VGG-16 : https://www.youtube.com/watch?v=L7qjQu2ry2Q&feature=youtu.be
 
-The video tutorial for Transfer learning with Resnet-50 : https://www.youtube.com/edit?video_referrer=watch&video_id=L7qjQu2ry2Q
+The video tutorial for Transfer learning with Resnet-50 : https://youtu.be/m5RjXjvAAhQ
 
 This repository shows how we can use transfer learning in keras with the example of training a 4 class classification model using VGG-16 and Resnet-50 pre-trained weights.The vgg-16 and resnet-50 are the CNN models trained on more than a million images of 1000 different categories.