Update css-shared-element-transitions-1/Overview.bs

Co-authored-by: Khushal Sagar <63884798+khushalsagar@users.noreply.github.com>

Author: vmpstr

css-shared-element-transitions-1/Overview.bs

@@ -108,7 +108,7 @@ Each of the groups is comprised of up to four pseudo elements:
 ISSUE: This sections can benefit from diagrams.
 
 Each of the pseudo-elements generated can be targeted by CSS in order to
-customize its appearance and behavior. This enables full customization of the
+customize its appearance, behavior and/or add animations. This enables full customization of the
 transition.
 
 Note that because these APIs are an enhancement to the DOM change, some principles emerge: