Fix typo in vtkTextMapper.
Fix typo in vtkTextMapper.

Change-Id: I5119029cebdea56d466c81394a9147ba6fcdf193

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