Fix image path

Author: cwickham

docs/blog/posts/2024-xx-xx-1.6-release/index.qmd

@@ -8,7 +8,7 @@ categories:
 author: Charlotte Wickham
 date: "11/15/2024"
 draft: false
-image: "images/thumbnail.png"
+image: "thumbnail.png"
 image-alt: "Quarto 1.6 with a palette."
 ---