message: Fix markdown rendering.
diff: @@ -306,6 +306,7 @@ class Variable(six.with_metaclass(VariableMetaclass,
  Here replacing adding `use_resource=True` when constructing the variable will
  fix any nondeterminism issues:
  +
  ```
  v = tf.Variable(True, use_resource=True)
  tf.cond(v, lambda: v.assign(False), my_false_fn)
  