message: Fix mistakes in the onDemand documentation
diff: @@ -267,15 +267,15 @@ eager data sending of all data from each writer to all readers.
  Currently value is interpreted by only by the SST Reader engine.
  -17. ``StepDistributionMode``: Default **"StepsAllToAll"**. This value
  +17. ``StepDistributionMode``: Default **"AllToAll"**. This value
  controls how steps are distributed, particularly when there are
  -multiple readers. By default, the value is **StepsAllToAll*, which
  +multiple readers. By default, the value is **"AllToAll"**, which
  means that all timesteps are to be delivered to all readers (subject
  to discard rules, etc.). In other distribution modes, this is not the
  -case. For example, in **"StepsRoundRobin"**, each step is delivered
  +case. For example, in **"RoundRobin"**, each step is delivered
  only to a single reader, determined in a round-robin fashion based
  upon the number or readers who have opened the stream at the time the
  -step is submitted. In **"StepsOnDemand"** each step is delivered to a
  +step is submitted. In **"OnDemand"** each step is delivered to a
  single reader, but only upon request (with a request being initiated
  by the reader doing BeginStep()). Normal reader-side rules (like
  BeginStep timeouts) and writer-side rules (like queue limit behavior) apply.
  