message: Documentation fix to contrib.signals
  * Documentation fix to contrib.signals
  Fixed very confusing little typo
  * Update contrib.signal.md
  * Update contrib.signal.md
diff: @@ -28,14 +28,14 @@ The `axis` parameter to @{tf.contrib.signal.frame} allows you to frame tensors
  with inner structure (e.g. a spectrogram):
  ```python
  -# `magnitude_spectrograms` is a [batch_size, ?, 127] tensor of spectrograms. We
  +# `magnitude_spectrograms` is a [batch_size, ?, 129] tensor of spectrograms. We
  # would like to produce overlapping fixed-size spectrogram patches; for example,
  # for use in a situation where a fixed size input is needed.
  magnitude_spectrograms = tf.abs(tf.contrib.signal.stft(
  signals, frame_length=256, frame_step=64, fft_length=256))
  -# `spectrogram_patches` is a [batch_size, ?, 64, 127] tensor containing a
  -# variable number of [64, 127] spectrogram patches per batch item.
  +# `spectrogram_patches` is a [batch_size, ?, 64, 129] tensor containing a
  +# variable number of [64, 129] spectrogram patches per batch item.
  spectrogram_patches = tf.contrib.signal.frame(
  magnitude_spectrograms, frame_length=64, frame_step=16, axis=1)
  ```
  