fix typos in docs
fix typos in docs

DJ1K1/botkit,howdyai/botkit,acrollet/botkit,howdyai/botkit,howdyai/botkit,DJ1K1/botkit,EliKrumholz/botkit,ouadie-lahdioui/botkit,samuelsan/YelpBot,howdyai/botkit,dhulser/slack-reporting-bot,healthchatnow/hcn