Merge pull request tomalaforge#17 from tomalaforge/test

feat(challenge12): add embedded video

Author: tomalaforge

apps/scroll-cd/README.md

@@ -12,8 +12,7 @@ Zone.js triggers a change detection cycle each time a scroll event is dispatched
 
 The following video will explain what is the goal of this challenge.
 
-<video controls>
-<source src="https://user-images.githubusercontent.com/30832608/209819211-58d9ddcf-e1ad-4a78-8a7a-2be9d729e3f1.mov">
+<video controls src="https://user-images.githubusercontent.com/30832608/209819211-58d9ddcf-e1ad-4a78-8a7a-2be9d729e3f1.mov">
 </video>
 
 ### Statement