Fix typo.
Fix typo.

Co-Authored-By: chrisdembia <6d9b70b6769e7cc306c06b742df06abc65802691@cornell.edu>
opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core