prerelease changes

content/vesele_vanoce_2023.md

@@ -9,10 +9,9 @@ pinned = true
 
 <iframe
     class="video"
-    height="315"
     src="https://www.youtube.com/embed/YXbvzCNCBt0"
     title="YouTube video player"
     frameborder="0"
     allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
     allowfullscreen
-></iframe>
+></iframe>