Fix response key for getting learning materials
Fix response key for getting learning materials

Since this is a POST request the response has to be pluralized.

thecoolestguy/ilios,dartajax/ilios,dartajax/ilios,stopfstedt/ilios,Trott/ilios,thecoolestguy/ilios,ilios/ilios,stopfstedt/ilios,ilios/ilios,Trott/ilios