test: spa meta preload files

lib/core/middleware/nuxt.js

@@ -62,7 +62,7 @@ module.exports = async function nuxtMiddleware(req, res, next) {
       })
 
       // Pass with single Link header
-      // https://preloadFilesblog.cloudflare.com/http-2-server-push-with-multiple-assets-per-link-header
+      // https://blog.cloudflare.com/http-2-server-push-with-multiple-assets-per-link-header
       // https://www.w3.org/Protocols/9707-link-header.html
       res.setHeader('Link', pushAssets.join(','))
     }

test/fixtures/spa/nuxt.config.js

@@ -2,6 +2,11 @@ module.exports = {
   mode: 'spa',
   dev: false,
   transition: false,
+  render: {
+    http2: {
+      push: true
+    }
+  },
   build: {
     stats: false
   }