Fix missing quote mark in Cropping2D docstring
@@ -1571,7 +1571,7 @@ class Cropping2D(Layer):
model.add(Cropping2D(cropping=((2, 2), (4, 4)),
input_shape=(28, 28, 3)))
# now model.output_shape == (None, 24, 20, 3)
- model.add(Conv2D(64, (3, 3), padding='same))
+ model.add(Conv2D(64, (3, 3), padding='same'))
model.add(Cropping2D(cropping=((2, 2), (2, 2))))
# now model.output_shape == (None, 20, 16. 64)
```
