use bg static URL for the time being

will fix once tagged

docs/stylesheets/extra.css

@@ -90,7 +90,7 @@
 }
 
 body {
- background-image: url("/assets/blossom_valley.jpg");
+ background-image: url("https://github.com/gethomepage/homepage/blob/main/docs/assets/blossom_valley.jpg?raw=true");
  background-size: cover;
  background-attachment: fixed;
  background-position: center;