Merge pull request #51 from finglis/youtube-icon-update

Youtube icon update

Author: petebankhead

_slides/slide0.md

@@ -1,5 +1,5 @@
 ---
 slide-title: From Zero to QuPath Hero!
 slide-content: <br> Join Laura on her epic journey from humble beginnings to QuPath mastery in her new <a href="https://www.youtube.com/watch?v=MBrAVUsUdio&list=PLSCpSsEmyRpANBGQXB_oGslW9NIJz4A12&ab_channel=LauraNicolas-Saenz"target=blank>YouTube series</a>. 
-slide-img: /assets/images/slideshow/youtube-series-thumbnail.png
+slide-img: /assets/images/slideshow/zero-hero-thumbnail.gif
 ---