Update walkxcode.scss

Addresses issue #769 where background image url is referencing <ip_address>/resources/assets/themes/walkxcode (404) rather than <ip_address>/assets/themes/walkxcode where the images are stored

Author: robsd

src/assets/themes/walkxcode.scss

@@ -12,7 +12,7 @@
   --card-shadow: rgba(0, 0, 0, 0.5);
   --link: #3273dc;
   --link-hover: #2e4053;
-  --background-image: url("assets/themes/walkxcode/wallpaper-light.webp");
+  --background-image: url("/assets/themes/walkxcode/wallpaper-light.webp");
 }
 
 .theme-walkxcode.dark {
@@ -28,7 +28,7 @@
   --card-shadow: rgba(0, 0, 0, 0.5);
   --link: #ffffff;
   --link-hover: #fafafa;
-  --background-image: url("assets/themes/walkxcode/wallpaper.webp");
+  --background-image: url("/assets/themes/walkxcode/wallpaper.webp");
 }
 
 // theme