Fixed incorrect sub-pipeline option for HTML params

Change-Id: If26da0219d63fb2aad22301f045d922f27a62ce8
Docs: Added documentation about supported parsing pipeline options.

* There is some scope for cleaning up some of these in the coming
  weeks/months once we get the block-token related paragraph wrapping
  code fixed.

Change-Id: I182a3af04c8b6c5518b884f49ced932b804396a6
Merge "Fixed incorrect sub-pipeline option for HTML params"
Merge "Docs: Added documentation about supported parsing pipeline options."