Fix typo in doxygen configuration file
Fix typo in doxygen configuration file

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