docs: add assets cache-control

docs/functions/[[path]].ts

@@ -14,7 +14,20 @@ export const onRequestGet: PagesFunction = async ({ request, next, waitUntil })
     }
 
     if (/\.\w+$/.test(url.pathname)) {
-      return next(request);
+      const response = await next(request);
+
+      if (url.pathname.startsWith('/q-')) {
+        // assets starting with `q-` we know can be forever cached
+        // current workaround until this is merged: https://github.com/cloudflare/wrangler2/pull/796
+        const headers = new Headers();
+        response.headers.forEach((value, key) => headers.set(key, value));
+        headers.set('Cache-Control', 'public, max-age=31536000, immutable');
+        return new Response([101, 204, 205, 304].includes(response.status) ? null : response.body, {
+          ...response,
+          headers,
+        });
+      }
+      return response;
     }
 
     // do not using caching during development
@@ -31,7 +44,7 @@ export const onRequestGet: PagesFunction = async ({ request, next, waitUntil })
 
     // Generate Qwik SSR response
     const ssrResult = await render({
-      url: new URL(request.url),
+      url: request.url,
       symbols,
       base: '/',
     });