Role update

Author: emmanuellujan

_assets/people.csv

@@ -1,7 +1,7 @@
 Name,Position,Website,Role,Photo
 Alan Edelman,Principal Investigator,http://www-math.mit.edu/~edelman,Current Member,Yes
 Philip,Julia Expert,https://news.mit.edu/2020/computational-thinking-class-enables-students-engage-covid-19-response-0407,Current Member,Yes
-Chris Rackauckas,Co-Principal Investigator,http://chrisrackauckas.com/,Current Member,Yes
+Chris Rackauckas,Expert Collaborator,http://chrisrackauckas.com/,Current Member,Yes
 Bob Metcalfe,Research Affiliate,https://www.linkedin.com/in/robertmmetcalfe/,Current Member,Yes
 Virginia Spanoudaki,Senior Research Scientist,https://www.linkedin.com/in/virginia-spanoudaki-38aab06/,Current Member,Yes
 Emmanuel Lujan,Postdoctoral Associate,http://www.emmanuellujan.com,Current Member,Yes