Fix typo in SWIG interface file
Fix typo in SWIG interface file

projectchrono/chrono,projectchrono/chrono,rserban/chrono,projectchrono/chrono,rserban/chrono,projectchrono/chrono,rserban/chrono,rserban/chrono,rserban/chrono,projectchrono/chrono,rserban/chrono,projectchrono/chrono,rserban/chrono