Fix the docstring with getProvenanceUser.
Fix the docstring with getProvenanceUser.

The provenance user is the user that triggered the provenance change.  This is correctly calculated, but the doc string said otherwise.

jbeezley/girder,manthey/girder,jbeezley/girder,manthey/girder,Kitware/girder,data-exp-lab/girder,girder/girder,Kitware/girder,RafaelPalomar/girder,jbeezley/girder,sutartmelson/girder,manthey/girder,Kitware/girder,data-exp-lab/girder,kotfic/girder,adsorensen/girder,data-exp-lab/girder,data-exp-lab/girder,adsorensen/girder,RafaelPalomar/girder,sutartmelson/girder,manthey/girder,RafaelPalomar/girder,Xarthisius/girder,adsorensen/girder,RafaelPalomar/girder,girder/girder,adsorensen/girder,adsorensen/girder,data-exp-lab/girder,Kitware/girder,Xarthisius/girder,jbeezley/girder,Xarthisius/girder,girder/girder,girder/girder,sutartmelson/girder,kotfic/girder,kotfic/girder,Xarthisius/girder,kotfic/girder,sutartmelson/girder,Xarthisius/girder,RafaelPalomar/girder,sutartmelson/girder,kotfic/girder