fix(typo): update route 1 to route 2 (#3848)

Author: hua-bang

react-manifest-example/host/src/pages/remote2.tsx

@@ -8,7 +8,7 @@ const Button = React.lazy(async ()=>{
 
 function Remote2 () {
     return <Suspense fallback={'loading'}>
-        <h2>Remote1 Router</h2>
+        <h2>Remote2 Router</h2>
         <Button />
     </Suspense>;
 }