message: Update weight_decay_optimizers.py
diff: @@ -64,10 +64,10 @@ class DecoupledWeightDecayExtension(object):
  the decay to the `weight_decay` as well. For example:
  ```python
  - decay = tf.train.piecewise_constant(tf.train.get_global_step(),
  - [10000, 15000], [1e-1, 1e-2, 1e-3])
  - lr = 1*decay
  - wd = 1e-4*decay
  + schedule = tf.train.piecewise_constant(tf.train.get_global_step(),
  + [10000, 15000], [1e-0, 1e-1, 1e-2])
  + lr = 1e-1 * schedule()
  + wd = lambda: 1e-4 * schedule()
  # ...
  