suzerain: #3037 increase domain size

Per discussion in the ticket, the wall-normal domain size was too
small given the specific-enthalpy-based thickness.  Updating with
now larger result.

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@44042 0bd85f0b-c151-43b9-a1e9-27231104551f