Update package.json

Author: w2xi

package.json

@@ -3,7 +3,7 @@
   "type": "module",
   "private": true,
   "scripts": {
-    "build": "slidev build",
+    "build": "slidev build --base /slides-demo/",
     "dev": "slidev --open",
     "export": "slidev export"
   },
@@ -12,4 +12,4 @@
     "@slidev/theme-default": "latest",
     "@slidev/theme-seriph": "latest"
   }
-}
+}