vtkIOGeometry: Correct typos in older jsoncpp API calls
vtkIOGeometry: Correct typos in older jsoncpp API calls

Change-Id: I26483d85a8c9a72faf75df2c6c5ef2dadf177c75

keithroe/vtkoptix,SimVascular/VTK,sankhesh/VTK,johnkit/vtk-dev,SimVascular/VTK,ashray/VTK-EVM,sankhesh/VTK,mspark93/VTK,sumedhasingla/VTK,johnkit/vtk-dev,keithroe/vtkoptix,keithroe/vtkoptix,mspark93/VTK,msmolens/VTK,msmolens/VTK,msmolens/VTK,candy7393/VTK,keithroe/vtkoptix,sankhesh/VTK,gram526/VTK,SimVascular/VTK,sumedhasingla/VTK,keithroe/vtkoptix,demarle/VTK,SimVascular/VTK,jmerkow/VTK,demarle/VTK,gram526/VTK,sumedhasingla/VTK,msmolens/VTK,gram526/VTK,msmolens/VTK,msmolens/VTK,gram526/VTK,johnkit/vtk-dev,demarle/VTK,ashray/VTK-EVM,jmerkow/VTK,mspark93/VTK,hendradarwin/VTK,demarle/VTK,ashray/VTK-EVM,sumedhasingla/VTK,candy7393/VTK,jmerkow/VTK,mspark93/VTK,johnkit/vtk-dev,jmerkow/VTK,jmerkow/VTK,demarle/VTK,SimVascular/VTK,hendradarwin/VTK,johnkit/vtk-dev,sankhesh/VTK,johnkit/vtk-dev,ashray/VTK-EVM,ashray/VTK-EVM,ashray/VTK-EVM,SimVascular/VTK,SimVascular/VTK,gram526/VTK,demarle/VTK,ashray/VTK-EVM,demarle/VTK,candy7393/VTK,jmerkow/VTK,candy7393/VTK,mspark93/VTK,candy7393/VTK,hendradarwin/VTK,gram526/VTK,sumedhasingla/VTK,candy7393/VTK,mspark93/VTK,sumedhasingla/VTK,SimVascular/VTK,gram526/VTK,sankhesh/VTK,mspark93/VTK,keithroe/vtkoptix,keithroe/vtkoptix,hendradarwin/VTK,keithroe/vtkoptix,demarle/VTK,mspark93/VTK,jmerkow/VTK,ashray/VTK-EVM,sumedhasingla/VTK,hendradarwin/VTK,gram526/VTK,sankhesh/VTK,johnkit/vtk-dev,hendradarwin/VTK,sumedhasingla/VTK,candy7393/VTK,jmerkow/VTK,sankhesh/VTK,msmolens/VTK,sankhesh/VTK,msmolens/VTK,candy7393/VTK,hendradarwin/VTK