fixed typos in the doc
fixed typos in the doc

naderman/Silex,CarsonF/Silex,romainneutron/Silex,peterkokot/Silex,SpacePossum/Silex,Xephi/Silex,SanderKnape/Silex,mmauri04/Silex,tcx1000/Silex,Tobion/Silex,gencer/Silex,plotek/Silex,fhinkel/Silex,fhinkel/Silex,arduanov/Silex,beealone/Silex,mmauri04/Silex,JPry/Silex,akucherevskiy/developex_test,cgsmith/Silex,lyrixx/Silex,lokhman/Silex,peterkokot/Silex,Incognito/silex-fork,lokhman/Silex,romainneutron/Silex,cesarmarinhorj/Silex,CarsonF/Silex,tcx1000/Silex,fabpot/Silex,SanderKnape/Silex,naderman/Silex,cgsmith/Silex,RayRutjes/Silex,CarsonF/Silex,akucherevskiy/developex_test,mTorres/Silex,romainneutron/Silex,Incognito/silex-fork,Xephi/Silex,Tobion/Silex,naderman/Silex,peterkokot/Silex,Tobion/Silex,JPry/Silex,mathroc/Silex,lyrixx/Silex,fabpot/Silex,silexphp/Silex,GromNaN/Silex,akucherevskiy/developex_test,cesarmarinhorj/Silex,plotek/Silex,lyrixx/Silex,mathroc/Silex,RayRutjes/Silex,mTorres/Silex,beealone/Silex,SpacePossum/Silex,jdreesen/Silex,GromNaN/Silex,arduanov/Silex,GromNaN/Silex,jdreesen/Silex