Update carousel.html
Update carousel.html

Changed to elementbyid
mjrulesamrat/xblock-carousel,cecep-edu/xblock-carousel,METIT-BU/xblock-carousel,mjrulesamrat/xblock-carousel,METIT-BU/xblock-carousel,METIT-BU/xblock-carousel,cecep-edu/xblock-carousel,mjrulesamrat/xblock-carousel,cecep-edu/xblock-carousel