Update lab05.md
Update lab05.md

Corrected some of the writeup
ucsd-cse-spis-2017/ucsd-cse-spis-2017.github.io,ucsd-cse-spis-2017/ucsd-cse-spis-2017.github.io,ucsd-cse-spis-2017/ucsd-cse-spis-2017.github.io,ucsd-cse-spis-2017/ucsd-cse-spis-2017.github.io,ucsd-cse-spis-2017/ucsd-cse-spis-2017.github.io