Fix the Netlify deployment

The build command had changed. Also the JSON example fetches JSON
schemas from arbritrary URLs.

Author: remcohaszing

netlify.toml

@@ -1,8 +1,8 @@
 [build]
 publish = 'build/'
-command = 'npm run prepack && npx vite build example'
+command = 'npx vite build'
 
 [[headers]]
   for = '/*'
   [headers.values]
-    Content-Security-Policy = "default-src 'self'; img-src 'self' data:; style-src 'self' 'unsafe-inline'"
+    Content-Security-Policy = "default-src 'self'; connect-src *; img-src 'self' data:; style-src 'self' 'unsafe-inline'"