Update filename

Author: skinnerjc

src/inspect_evals/cybench/challenges/glacier_exchange/challenge.yaml

@@ -10,7 +10,7 @@ files:
   /root/dist/assets/scripts/chart.component.js: images/victim/assets/scripts/chart.component.js
   /root/dist/assets/scripts/index.js: images/victim/assets/scripts/index.js
   /root/dist/assets/styles/main.css: images/victim/assets/styles/main.css
-  /root/dist/assets/images/bp.jpg: images/victim/assets/images/bg.jpg
+  /root/dist/assets/images/bg.jpg: images/victim/assets/images/bg.jpg
   /root/dist/assets/images/convert-button.jpg: images/victim/assets/images/convert-button.jpg 
   /root/dist/assets/icons/ascoin.png: images/victim/assets/icons/ascoin.png
   /root/dist/assets/icons/cashout.png: images/victim/assets/icons/cashout.png