Update internals.rst
Update internals.rst

Fixed minor typo and added a missing comma in the same sentence.
Xephi/Silex,gencer/Silex,akucherevskiy/developex_test,Incognito/silex-fork,arduanov/Silex,fabpot/Silex,SanderKnape/Silex,cgsmith/Silex,peterkokot/Silex,peterkokot/Silex,beealone/Silex,naderman/Silex,lokhman/Silex,CarsonF/Silex,akucherevskiy/developex_test,mmauri04/Silex,akucherevskiy/developex_test,silexphp/Silex,Tobion/Silex,arduanov/Silex,beealone/Silex,peterkokot/Silex,mathroc/Silex,romainneutron/Silex,mmauri04/Silex,cesarmarinhorj/Silex,plotek/Silex,fhinkel/Silex,Incognito/silex-fork,romainneutron/Silex,jdreesen/Silex,Tobion/Silex,JPry/Silex,plotek/Silex,GromNaN/Silex,Xephi/Silex,cgsmith/Silex,romainneutron/Silex,lokhman/Silex,mTorres/Silex,GromNaN/Silex,CarsonF/Silex,RayRutjes/Silex,mathroc/Silex,naderman/Silex,mTorres/Silex,tcx1000/Silex,Tobion/Silex,SpacePossum/Silex,tcx1000/Silex,RayRutjes/Silex,SanderKnape/Silex,SpacePossum/Silex,CarsonF/Silex,jdreesen/Silex,fhinkel/Silex,JPry/Silex,fabpot/Silex,naderman/Silex,cesarmarinhorj/Silex,GromNaN/Silex