message: Updating layers.md (fixing typo)
  Fixing typo. Changing 'ans calling' to 'and calling'
diff: @@ -635,7 +635,7 @@ should be logged after every 50 steps of training.
  ### Train the Model
  Now we're ready to train our model, which we can do by creating `train_input_fn`
  -ans calling `train()` on `mnist_classifier`. Add the following to `main()`:
  +and calling `train()` on `mnist_classifier`. Add the following to `main()`:
  ```python
  # Train the model
  