message: Fix invalid deprecation pointer for tf.layers.average_pooling1d/max_pooling1d
  In tf.layers the deprecation notice of tf.layers.average_pooling1d/max_pooling1d
  points to non-existance tf.keras.layers.average_pooling1d/max_pooling1d.
  This fix updates the notice to point to tf.keras.layers.AveragePooling1D/MaxPooling1D
diff: @@ -60,7 +60,7 @@ class AveragePooling1D(keras_layers.AveragePooling1D, base.Layer):
  @deprecation.deprecated(
  date=None,
  - instructions='Use keras.layers.average_pooling1d instead.')
  + instructions='Use keras.layers.AveragePooling1D instead.')
  @tf_export(v1=['layers.average_pooling1d'])
  def average_pooling1d(inputs, pool_size, strides,
  padding='valid', data_format='channels_last',
  @@ -131,7 +131,7 @@ class MaxPooling1D(keras_layers.MaxPooling1D, base.Layer):
  @deprecation.deprecated(
  date=None,
  - instructions='Use keras.layers.max_pooling1d instead.')
  + instructions='Use keras.layers.MaxPooling1D instead.')
  @tf_export(v1=['layers.max_pooling1d'])
  def max_pooling1d(inputs, pool_size, strides,
  padding='valid', data_format='channels_last',
  