docs(rate-limiting): update WsThrottlerGuard example for v5

Author: CodyTseng

content/security/rate-limiting.md

@@ -64,7 +64,7 @@ export class AppModule {}
 
 #### Customization
 
-There may be a time where you want to bind the guard to a controller or globally, but want to disable rate limiting for one or more of your endpoints. For that, you can use the `@SkipThrottle()` decorator, to negate the throttler for an entire class or a single route. The `@SkipThrottle()` decorator can also take in an object of string keys with boolean values for if there is a case where you want to exclude _most_ of a controller, but not every route, and configure it per throttler set if you have more than one. If you do not pass an object, the default is to use `{{ '{' }} default: true {{ '}' }}` 
+There may be a time where you want to bind the guard to a controller or globally, but want to disable rate limiting for one or more of your endpoints. For that, you can use the `@SkipThrottle()` decorator, to negate the throttler for an entire class or a single route. The `@SkipThrottle()` decorator can also take in an object of string keys with boolean values for if there is a case where you want to exclude _most_ of a controller, but not every route, and configure it per throttler set if you have more than one. If you do not pass an object, the default is to use `{{ '{' }} default: true {{ '}' }}`
 
 ```typescript
 @SkipThrottle()
@@ -132,10 +132,10 @@ This module can work with websockets, but it requires some class extension. You
 ```typescript
 @Injectable()
 export class WsThrottlerGuard extends ThrottlerGuard {
-  async handleRequest(context: ExecutionContext, limit: number, ttl: number): Promise<boolean> {
+  async handleRequest(context: ExecutionContext, limit: number, ttl: number, throttler: ThrottlerOptions): Promise<boolean> {
     const client = context.switchToWs().getClient();
     const ip = client._socket.remoteAddress;
-    const key = this.generateKey(context, ip);
+    const key = this.generateKey(context, ip, throttler.name);
     const { totalHits } = await this.storageService.increment(key, ttl);
 
     if (totalHits > limit) {
@@ -231,10 +231,12 @@ One approach would be to use a factory function:
     ThrottlerModule.forRootAsync({
       imports: [ConfigModule],
       inject: [ConfigService],
-      useFactory: (config: ConfigService) => ([{
-        ttl: config.get('THROTTLE_TTL'),
-        limit: config.get('THROTTLE_LIMIT'),
-      }]),
+      useFactory: (config: ConfigService) => [
+        {
+          ttl: config.get('THROTTLE_TTL'),
+          limit: config.get('THROTTLE_LIMIT'),
+        },
+      ],
     }),
   ],
 })