Fix Doxygen warning
Merge branch 'fix/doxygen-warning' into 'master'

Fix Doxygen warning

+1: Gughan Sathyaseelan, Julien Lenoir

Merged-on: https://www.assembla.com/code/OpenSurgSim/git/merge_requests/1047604
Adds missing DataGroupBuilder include for VirtualToolCoupler.
Merge branch 'master' into feature/vtc-inheritable