Typo: s/shure/sure

Change-Id: I1c55d3ee8be06deb6d48a6ad5cd30d170c8b9dbb
Typo: s/cant/can't/

Change-Id: Id76b4ea569246c4b96da48dbc8d5a557367e0cca
Typo: s/gurantee/guarantee

Change-Id: I8bd7ca5896931fbf18bf8ae25b62ced9b420fe39