docs: Update request handler to use handle method

there is no request method the correct method is hanlde

adev/src/content/guide/ssr.md

@@ -659,7 +659,7 @@ const angularApp = new AngularAppEngine();
  * This is a request handler used by the Angular CLI (dev-server and during build).
  */
 export const reqHandler = createRequestHandler(async (req: Request) => {
-  const res: Response | null = await angularApp.render(req);
+  const res: Response | null = await angularApp.handle(req);
 
   // ...
 });