message: availableMemoryProportion convolution option is persentage expressed as a float between 0 and 1. Changing function description accordingly.
  Reviewers: #tensorflow, georgep, jakeh
diff: @@ -221,10 +221,10 @@ def set_matmul_options(opts, matmul_options=None, clear_pass_type=False):
  .. code-block:: python
  - # Set "availableMemoryProportion" flag to "50"
  + # Set "availableMemoryProportion" flag to "0.5"
  opts = create_ipu_config()
  opts = set_matmul_options(opts,
  - matmul_options={"availableMemoryProportion": "50"})
  + matmul_options={"availableMemoryProportion": "0.5"})
  ipu.utils.configure_ipu_system(cfg)
  with tf.Session() as s:
  ...
  