docs(modal): document DI notation
docs(modal): document DI notation

- Document array notation being allowed for controller for dependency injection and being minification-proof

Closes #5209

benhalverson/bootstrap,looker/bootstrap,benhalverson/bootstrap,BookingBug/bootstrap,mabi/bootstrap,infowrap/bootstrap,vfiles/bootstrap,vfiles/bootstrap,Kpler/bootstrap,BookingBug/bootstrap,burlhock/bootstrap,shootermv/bootstrap,byronigoe/bootstrap,RobJacobs/bootstrap,looker/bootstrap,caoruiy/bootstrap,burlhock/bootstrap,292388900/bootstrap,fpipita/bootstrap,christor/bootstrap,icfantv/bootstrap,wesleycho/bootstrap,deeg/bootstrap,Foxandxss/bootstrap,shootermv/bootstrap,292388900/bootstrap,wesleycho/bootstrap,Foxandxss/bootstrap,RobJacobs/bootstrap,benhalverson/bootstrap,fpipita/bootstrap,Servoy/bootstrap,byronigoe/bootstrap,deeg/bootstrap,Kpler/bootstrap,benhalverson/bootstrap,icfantv/bootstrap,angular-ui/bootstrap,caoruiy/bootstrap,mabi/bootstrap,Servoy/bootstrap,infowrap/bootstrap,christor/bootstrap,angular-ui/bootstrap