Typo fixes related to the Chow-Patel ILU

This includes one change which affects execution, namely fixing a bug
in an assertion in the host-based Chow-Patel code (recently fixed in another impl).

Also included are a couple of changes to docs and output
-Update to the manual note that some Preconditioners can be setup on the device
-Fix to some output in the benchmarks (ILU-->ICC)