Merge branch 'master' of https://github.com/nestjs/docs.nestjs.com

Author: kamilmysliwiec

content/fundamentals/lifecycle-events.md

@@ -109,3 +109,5 @@ class UsersService implements OnApplicationShutdown {
   }
 }
 ```
+
+> info **Info** Calling `app.close()` doesn't terminate the Node process but only triggers the `onModuleDestroy()` and `onApplicationShutdown()` hooks, so if there are some intervals, long-running background tasks, etc. the process won't be automatically terminated.

content/techniques/file-upload.md

@@ -85,7 +85,7 @@ When using `FileFieldsInterceptor()`, extract files from the `request` with the
   { name: 'avatar', maxCount: 1 },
   { name: 'background', maxCount: 1 },
 ]))
-uploadFile(@UploadedFiles() files: Express.Multer.File[]) {
+uploadFile(@UploadedFiles() files: { avatar?: Express.Multer.File[], background?: Express.Multer.File[] }) {
   console.log(files);
 }
 @@switch