Fix image path

Signed-off-by: Mattie Nickson <mnickson@sidingsmedia.com>

Author: Computroniks

content/gallery/dn42.md

@@ -2,7 +2,7 @@
 title: "DN42"
 subtitle: "We participate in DN42"
 date: "2025-06-06T14:49:06+01:00"
-image: "images/dn42.svg"
+image: "images/dn42.png"
 alt: "Logo for DN42"
 # color: "#454ade"
 color: "#d8d8f1"