Update grpc.md

Author: kamilmysliwiec

content/microservices/grpc.md

@@ -50,33 +50,6 @@ In the `nest-cli.json` file, we add the `assets` property that allows us to dist
 }
 ```
 
-#### gRPC Reflection
-
-The [gRPC Server Reflection Specification](https://grpc.io/docs/guides/reflection/#overview) is a standard which allows gRPC clients to request details about the API that the server exposes, akin to exposing an OpenAPI document for a REST API. This can make working with developer debugging tools such as grpc-ui or postman significantly easier.
-
-To add gRPC reflection support to your server, first install the required implementation package:
-
-```bash
-$ npm i --save @grpc/reflection
-```
-
-Then it can be hooked into the gRPC server using the `onLoadPackageDefinition` hook in your gRPC server options, as follows:
-
-```typescript
-@@filename(main)
-import { ReflectionService } from '@grpc/reflection';
-
-const app = await NestFactory.createMicroservice<MicroserviceOptions>(AppModule, {
-  options: {
-    onLoadPackageDefinition: (pkg, server) => {
-      new ReflectionService(pkg).addToServer(server);
-    },
-  },
-});
-```
-
-Now your server will respond to messages requesting API details using the reflection specification.
-
 #### Options
 
 The <strong>gRPC</strong> transporter options object exposes the properties described below.
@@ -366,6 +339,33 @@ Please note that this would require updating the `HeroesService` interface that
 
 A working example is available [here](https://github.com/nestjs/nest/tree/master/sample/04-grpc).
 
+#### gRPC Reflection
+
+The [gRPC Server Reflection Specification](https://grpc.io/docs/guides/reflection/#overview) is a standard which allows gRPC clients to request details about the API that the server exposes, akin to exposing an OpenAPI document for a REST API. This can make working with developer debugging tools such as grpc-ui or postman significantly easier.
+
+To add gRPC reflection support to your server, first install the required implementation package:
+
+```bash
+$ npm i --save @grpc/reflection
+```
+
+Then it can be hooked into the gRPC server using the `onLoadPackageDefinition` hook in your gRPC server options, as follows:
+
+```typescript
+@@filename(main)
+import { ReflectionService } from '@grpc/reflection';
+
+const app = await NestFactory.createMicroservice<MicroserviceOptions>(AppModule, {
+  options: {
+    onLoadPackageDefinition: (pkg, server) => {
+      new ReflectionService(pkg).addToServer(server);
+    },
+  },
+});
+```
+
+Now your server will respond to messages requesting API details using the reflection specification.
+
 #### gRPC Streaming
 
 gRPC on its own supports long-term live connections, conventionally known as `streams`. Streams are useful for cases such as Chatting, Observations or Chunk-data transfers. Find more details in the official documentation [here](https://grpc.io/docs/guides/concepts/).