BUG:0012144 correct the documentation for GetArrayIndex

Per bug # 0012114, the documentation was wrong.

Change-Id: I4386cc01edc6f84f9ca1aa2a02d19ff61d1d4bdf
Fix off by one error in vtkFLUENTReader::GetCellsAscii().

Thanks to Dan Clark to pointing out the issue in the vtkFLUENTReader.

Change-Id: I0bea0c4ed74917d6af913d95f8cfd9a6d45dec11
Merge topic 'vtkFLUENTReader_array_indexing_12683' into master

0a2836c7 Fix off by one error in vtkFLUENTReader::GetCellsAscii().
Merge topic '0012114-fix-getarrayindex-documentation' into master

736a4ade BUG:0012144 correct the documentation for GetArrayIndex