fix typos; add stop instance to docs
fix typos; add stop instance to docs

Rdbaker/GameCenter,Rdbaker/Rank,Rdbaker/GameCenter,Rdbaker/GameCenter,Rdbaker/GameCenter,Rdbaker/GameCenter,Rdbaker/Rank,Rdbaker/Rank,Rdbaker/Rank,Rdbaker/Rank