fix asset path

web/demo/vite.config.js

@@ -2,7 +2,9 @@ import { defineConfig } from 'vite'
 import path from 'path'
 
 // Do not minify(we want to make demo website simple)
+// base: "./" => make asset path relative(required for static hosting of tinyusdz demo page at github pages)
 export default defineConfig({
+    base: "./",
     server: {
         headers: {
             'Cross-Origin-Opener-Policy': 'same-origin',