Fix some typo inside readme
Fix some typo inside readme

Signed-off-by: Sebastiano Mariani <aede0281c92ed74ce106a06c39d2ff364ac8a785@gmail.com>

ucsb-seclab/dr_checker,ucsb-seclab/dr_checker,ucsb-seclab/dr_checker,ucsb-seclab/dr_checker,ucsb-seclab/dr_checker