Corrected max inital worksheet number in debughelper message
Corrected max inital worksheet number in debughelper message

Change-Id: Icd40cc3bdc70e0ff55c82a6a4099411d1da47f56

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core