Stray link in excerpts

At the bottom of the page http://www.zionbuffalo.org/groups/youth-children/birth-grade-6/vbs/ in the ‘Updates’ section I used the shortcode to pull in posts. On this page each excerpt begins with a YouTube link from “recap video” a few lines above the shortcode … what’s going on?

https://wordpress.org/plugins/list-category-posts/