Update landing page text
Update landing page text

* Fix grammar
* Clarify when Hound reviews code

thoughtbot/hound,thoughtbot/hound,JuanitoFatas/hound,platanus/hound,yatish27/hound,alexeyzab/hound,eliperkins/hound,houndci/hound,q-centrix/hound,thoughtbot/hound,bitjourney/hound,JuanitoFatas/hound,enricogenauck/labhound,bronislav/hound,alexeyzab/hound,brgaulin/hound,brgaulin/hound,brgaulin/hound,yatish27/hound,Koronen/hound,orangeiceberg/hound,q-centrix/hound,platanus/hound,platanus/hound,JuanitoFatas/hound,enricogenauck/labhound,enricogenauck/labhound,q-centrix/hound,q-centrix/hound,bronislav/hound,orangeiceberg/hound,bronislav/hound,orangeiceberg/hound,yatish27/hound,Koronen/hound,Koronen/hound,thoughtbot/hound,Koronen/hound,eliperkins/hound,orangeiceberg/hound,houndci/hound,alexeyzab/hound,houndci/hound,bitjourney/hound,yatish27/hound,eliperkins/hound,bitjourney/hound,bronislav/hound,JuanitoFatas/hound,alexeyzab/hound,houndci/hound,bitjourney/hound,eliperkins/hound,enricogenauck/labhound,platanus/hound,brgaulin/hound