update usage instructions of pocheck tool
update usage instructions of pocheck tool

Change-Id: Ibc1c5051a601a83a6616e6a22c45b05394c54e88

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