docs(website-new): fix code formatting on Federation Runtime example (#3821)

Co-authored-by: Hanric <[email protected]>

Author: nickhall

apps/website-new/docs/en/guide/basic/runtime.mdx

@@ -46,7 +46,7 @@ init({
       entry: "http://localhost:3006/remoteEntry.js",
       alias: "app2"
     },
-{
+    {
       name: "@demo/app4",
       entry: "http://localhost:3006/remoteEntry.mjs",
       alias: "app2",