oox: syntax fix: wrong index
oox: syntax fix: wrong index

Change-Id: I8b76da14c75050f60b0af10cdadda821484db4f1

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