typos

[alesparza]

2 typos (in bold italic) in README intro:
“Memcheck allows us to inspect memory usage to find bug related to memory management…”
“...followed by a more examples in scenario-2.”

[alesparza]

to be fixed maybe. I don't want to rebuild the commits for a few small typos and I think they aren't egregious enough to warrant a rebuild at the moment. can track for future iterations