chore(dev): make slowdown message not scary

Author: wmertens

packages/qwik/src/optimizer/src/plugins/vite-dev-server.ts

@@ -243,8 +243,7 @@ export async function configureDevServer(
   });
 
   setTimeout(() => {
-    console.log(`\n  ❗️ ${magenta('Expect significant performance loss in development.')}`);
-    console.log(`  ❗️ ${magenta("Disabling the browser's cache results in waterfall requests.")}`);
+    console.log(`\n  🚧 ${magenta('Please note that development mode is slower than production.')}`);
   }, 1000);
 }