Merge pull request #2438 from sshevlyagin/ss-bodyParser-docs

 docs(middleware): adding bodyParser customization documentation

Author: kamilmysliwiec

content/middlewares.md

@@ -122,6 +122,8 @@ export class AppModule {
 
 > info **Hint** The `configure()` method can be made asynchronous using `async/await` (e.g., you can `await` completion of an asynchronous operation inside the `configure()` method body).
 
+> warning **Warning** When using the `express` adapter, the NestJS app will register `json` and `urlencoded` from the package `body-parser` by default. This means if you want to customize that middleware via the `MiddlewareConsumer`, you need to turn off the global middleware by setting the `bodyParser` flag to `false` when creating the application with `NestFactory.create()`.
+
 #### Route wildcards
 
 Pattern based routes are supported as well. For instance, the asterisk is used as a **wildcard**, and will match any combination of characters: