build: fix Vite base

Signed-off-by: Andrew Berezovskyi <andriib@kth.se>

Author: berezovskyi

src/oslc-selection-demo/vite.config.js

@@ -1,14 +1,15 @@
 import { defineConfig } from 'vite'
 
 export default defineConfig({
-  server: {
-    port: 8080,
-    open: true
-  },
+  base: './',
   build: {
     outDir: 'dist',
     sourcemap: true
   },
+  server: {
+    port: 8080,
+    open: true
+  },
   optimizeDeps: {
     include: ['@oslc/oslc-selection-webcomponent']
   }