DOC: Updated output description
DOC: Updated output description

Updated documentation s.t. vtkMultiBlockDataSet is
the documented output from this filter in response
to recent changes in the output this filter produces.

candy7393/VTK,sankhesh/VTK,sankhesh/VTK,keithroe/vtkoptix,biddisco/VTK,ashray/VTK-EVM,biddisco/VTK,biddisco/VTK,biddisco/VTK,candy7393/VTK,berendkleinhaneveld/VTK,mspark93/VTK,candy7393/VTK,sankhesh/VTK,sumedhasingla/VTK,demarle/VTK,candy7393/VTK,hendradarwin/VTK,SimVascular/VTK,hendradarwin/VTK,sumedhasingla/VTK,sankhesh/VTK,keithroe/vtkoptix,sankhesh/VTK,mspark93/VTK,jmerkow/VTK,johnkit/vtk-dev,sumedhasingla/VTK,aashish24/VTK-old,gram526/VTK,cjh1/VTK,berendkleinhaneveld/VTK,gram526/VTK,SimVascular/VTK,sumedhasingla/VTK,candy7393/VTK,cjh1/VTK,msmolens/VTK,gram526/VTK,jmerkow/VTK,ashray/VTK-EVM,keithroe/vtkoptix,mspark93/VTK,aashish24/VTK-old,jmerkow/VTK,keithroe/vtkoptix,hendradarwin/VTK,gram526/VTK,cjh1/VTK,collects/VTK,aashish24/VTK-old,msmolens/VTK,demarle/VTK,berendkleinhaneveld/VTK,biddisco/VTK,SimVascular/VTK,sankhesh/VTK,jmerkow/VTK,ashray/VTK-EVM,johnkit/vtk-dev,msmolens/VTK,cjh1/VTK,johnkit/vtk-dev,SimVascular/VTK,msmolens/VTK,ashray/VTK-EVM,ashray/VTK-EVM,jmerkow/VTK,collects/VTK,keithroe/vtkoptix,hendradarwin/VTK,sumedhasingla/VTK,jmerkow/VTK,hendradarwin/VTK,mspark93/VTK,ashray/VTK-EVM,collects/VTK,jmerkow/VTK,sumedhasingla/VTK,ashray/VTK-EVM,aashish24/VTK-old,aashish24/VTK-old,hendradarwin/VTK,mspark93/VTK,ashray/VTK-EVM,sankhesh/VTK,johnkit/vtk-dev,collects/VTK,SimVascular/VTK,candy7393/VTK,johnkit/vtk-dev,collects/VTK,aashish24/VTK-old,biddisco/VTK,keithroe/vtkoptix,demarle/VTK,keithroe/vtkoptix,cjh1/VTK,SimVascular/VTK,gram526/VTK,demarle/VTK,mspark93/VTK,collects/VTK,candy7393/VTK,hendradarwin/VTK,berendkleinhaneveld/VTK,SimVascular/VTK,sankhesh/VTK,sumedhasingla/VTK,mspark93/VTK,msmolens/VTK,biddisco/VTK,berendkleinhaneveld/VTK,gram526/VTK,msmolens/VTK,mspark93/VTK,demarle/VTK,sumedhasingla/VTK,demarle/VTK,SimVascular/VTK,cjh1/VTK,demarle/VTK,berendkleinhaneveld/VTK,msmolens/VTK,johnkit/vtk-dev,candy7393/VTK,demarle/VTK,msmolens/VTK,gram526/VTK,berendkleinhaneveld/VTK,johnkit/vtk-dev,gram526/VTK,jmerkow/VTK,keithroe/vtkoptix